GrowingHQ

Coverage and gaps

What GrowingHQ holds, what it does not, and what it is deliberately withholding. Published because a reader who can see the gaps can trust the rest.

What is actually here

WhatCount
Plants published223
— Vegetables45
— Herbs32
— Fruits21
— Houseplants32
— Ornamentals84
— Tree or shrubs9
Pests, diseases and disorders101
Symptom entry points23
Growing methods modelled14
Named soils8
Fruit cultivars80
Rootstocks12
Structured claims12,852
Citations9,302
Registered sources28
Image slots filled0 of 149

Images

There are none. That is a decision rather than an oversight.

GrowingHQ has declared 149 image slots across the site and filled 0. Each empty slot carries the alt text already written, which doubles as the brief the eventual photograph has to satisfy — so a reader gets the useful half of the image as a description, and adding an asset later is filling a declared slot rather than retrofitting an image model onto a thousand pages.

Sourcing correctly identified, correctly licensed horticultural photography at catalogue scale is a project of its own. Nothing here is hotlinked, and nothing unlicensed will be used.

How well each growing method is covered

A method with few assessments is not a method GrowingHQ thinks is bad. It is one nobody has published enough serious guidance on for us to assess crop by crop.

MethodPlants assessedState
Open ground223 of 223populated
Container220 of 223populated
Raised bed177 of 223populated
Traditional dug bed165 of 223populated
Hydroponics120 of 223partial
Greenhouse115 of 223populated
Windowsill115 of 223populated
Polytunnel99 of 223populated
Indoor pot38 of 223partial
Vertical growing30 of 223partial
Aquaponics16 of 223structural only
Cold frame13 of 223partial
Grow tent4 of 223partial
Aeroponics0 of 223structural only

Areas modelled but not populated

GrowingHQ is built to cover far more than vegetables and herbs. These are the areas the schema already handles and the catalogue does not yet contain.

  • HouseplantsThe indoor light model and the system registry already handle these; what is missing is records. Houseplants also need a humidity and light model finer than the outdoor four-point scale.
  • Ornamentals, trees and shrubsThe perennial lifecycle, pruning and training structures built for fruit in Sprint 2 transfer directly. What is missing is records and a model for ornamental value — flowering period, foliage interest, wildlife value.
  • Cultivars outside fruitEighty fruit cultivars now carry season, use, keeping quality, plant behaviour and disease resistance. Vegetable cultivars are absent and are a different proposition: the differences that matter are mostly season and bolting resistance rather than pollination, and the naming is far less stable between suppliers.
  • Soil nutrients and compostingSoil texture, pH, drainage, moisture, organic matter and structure are modelled, and every plant can be assessed against every soil. What is absent is nutrients — deliberately, because NPK is a laboratory measurement that varies across a single garden and a figure attached to a soil class would be fabrication. Composting is also unmodelled: it is a process rather than a soil property and needs its own entity.
  • Site conditions beyond soilWet ground caused by a high water table rather than by texture is a site property, and a soil record cannot stand in for it. The same is true of frost pockets, wind exposure and rain shadow — all recorded as plant tolerances, none modelled as a property of a place.
  • Propagation and pruningBoth are in the action vocabulary and appear in guidance. Neither has the technique-level detail that would make them a section of their own.
  • Aquaponics and aeroponicsBoth are first-class growing systems in the model and neither carries a single per-plant assessment. Hydroponics now has 21 detailed assessments; these two need the same treatment and GrowingHQ has not yet found sources it can stand behind for either at garden scale.
  • Lawns, wildlife and garden infrastructureDeliberately last in the build order. Nothing about them is modelled yet, and nothing pretends to be.

Questions people ask, and whether we answer them

A registry of search intents derived from the catalogue rather than from a keyword export. Its most useful output is the list of questions an existing page already answers — because that is what stops a second page being built to answer the same thing.

2597 intents tracked. 2539 are answered by a page that exists, 16 partly, and 1 not at all.

Question familyTrackedAnsweredPartlyNot answered
How much water does [plant] need258223
How to grow [plant]223223
[plant] in pots220220
When to sow or plant [plant]189189
[plant] indoors185185
Is [cultivar] a good apple/pear/plum144144
When to prune [plant]137137
Why is my plant [symptom]122122
Is [plant] poisonous to cats or dogs114114
When to harvest [plant]113113
What can I grow [condition]1089761
Will [plant] grow in a pot92883
Is [plant] worth a greenhouse9191
[plant] hydroponically8585
Is [plant] evergreen72683
How big does [plant] get7070
How to propagate [plant]6565
Planting depth and overwintering for [bulb]4949
What pollinates [cultivar]4646
Will [plant] keep going on a windowsill4242
What grows on [soil]3636
Is [plant] good for wildlife2828
Pruning [fruit]2020
How to improve [soil]1818
Does [bulb] survive winter in the ground1818
How [growing method] works14122
How do I tell if I have [soil]1414
What support does [climber] need1212
[fruit] rootstocks77
[fruit] pollination33
[plant] in a greenhouse202

What is not answered, and what would answer it

  • how aquaponics works Partly answered

    Assess real crops in aquaponics. The method is explained; nothing in the catalogue has been assessed for it.

  • how aeroponics works Partly answered

    Assess real crops in aeroponics. The method is explained; nothing in the catalogue has been assessed for it.

  • what can I grow in a north-facing garden Partly answered

    Sprint 21 answered the vertical half of this: 'Climbers for a north-facing wall' publishes, because half the climber group tolerates the light a shaded wall gives and half does not. The whole-garden phrasing stays partial and should stay partial — a north-facing GARDEN is not one condition but several, and a collection claiming to answer it would be the shade list with a compass bearing on the front.

  • what can I grow in wet soil Partly answered

    The heavy clay page answers this for the commonest cause of wet ground, and the soil filter on What Can I Grow answers it from the plant side. What is still missing is the case where the wetness comes from a high water table rather than from texture — that is a site property GrowingHQ does not model, and a soil record cannot stand in for it.

  • what can I grow on a windy exposed site Not answered

    Exposure tolerance is recorded but rarely with a source, and Sprint 21 measured what happens when a page is built on the proxies instead: the coastal candidate's frost criterion excluded none of the thirty-four woody ornamentals in scope, so the list was drought tolerance under a wind heading. Retired rather than withheld. This intent needs a sourced exposure or salt field, not more plants.

  • what to grow in a greenhouse Partly answered

    The method page lists assessed crops, but the corresponding collection is withheld because nearly the whole catalogue qualifies. Needs a narrower question — which crops NEED cover rather than tolerate it.

  • what to grow in a polytunnel Partly answered

    The method page lists assessed crops, but the corresponding collection is withheld because nearly the whole catalogue qualifies. Needs a narrower question — which crops NEED cover rather than tolerate it.

  • crops for acid, peaty soil Deliberately not published

    Withheld by the publication gates (too-few-results). Needs 4 more qualifying growables in the catalogue.

  • houseplants for low light that are listed as non-toxic to cats and dogs Deliberately not published

    Withheld by the publication gates (too-few-results). Needs 5 more qualifying growables in the catalogue.

  • trees for a small garden Deliberately not published

    Withheld by the publication gates (too-few-results). Needs 2 more qualifying growables in the catalogue.

  • ferns that stay green through winter Deliberately not published

    Withheld by the publication gates (near-duplicate). Covered by "Ferns for dry shade". Publish this only if the two sets diverge.

  • how often to water a aglaonema Same question, answered elsewhere

    Nothing, on this row. It is the houseplant phrasing of a question already tracked as `dr-<slug>`, and the watering guidance that would answer both belongs on the profile.

  • how often to water a alocasia Same question, answered elsewhere

    Nothing, on this row. It is the houseplant phrasing of a question already tracked as `dr-<slug>`, and the watering guidance that would answer both belongs on the profile.

  • how often to water a aloe vera Same question, answered elsewhere

    Nothing, on this row. It is the houseplant phrasing of a question already tracked as `dr-<slug>`, and the watering guidance that would answer both belongs on the profile.

  • how often to water a anthurium Same question, answered elsewhere

    Nothing, on this row. It is the houseplant phrasing of a question already tracked as `dr-<slug>`, and the watering guidance that would answer both belongs on the profile.

  • how often to water a bird of paradise Same question, answered elsewhere

    Nothing, on this row. It is the houseplant phrasing of a question already tracked as `dr-<slug>`, and the watering guidance that would answer both belongs on the profile.

  • how often to water a boston fern Same question, answered elsewhere

    Nothing, on this row. It is the houseplant phrasing of a question already tracked as `dr-<slug>`, and the watering guidance that would answer both belongs on the profile.

  • how often to water a calathea Same question, answered elsewhere

    Nothing, on this row. It is the houseplant phrasing of a question already tracked as `dr-<slug>`, and the watering guidance that would answer both belongs on the profile.

  • how often to water a chinese money plant Same question, answered elsewhere

    Nothing, on this row. It is the houseplant phrasing of a question already tracked as `dr-<slug>`, and the watering guidance that would answer both belongs on the profile.

  • how often to water a christmas cactus Same question, answered elsewhere

    Nothing, on this row. It is the houseplant phrasing of a question already tracked as `dr-<slug>`, and the watering guidance that would answer both belongs on the profile.

  • how often to water a dieffenbachia Same question, answered elsewhere

    Nothing, on this row. It is the houseplant phrasing of a question already tracked as `dr-<slug>`, and the watering guidance that would answer both belongs on the profile.

  • how often to water a dragon tree Same question, answered elsewhere

    Nothing, on this row. It is the houseplant phrasing of a question already tracked as `dr-<slug>`, and the watering guidance that would answer both belongs on the profile.

  • how often to water a echeveria Same question, answered elsewhere

    Nothing, on this row. It is the houseplant phrasing of a question already tracked as `dr-<slug>`, and the watering guidance that would answer both belongs on the profile.

  • how often to water a fatsia Same question, answered elsewhere

    Nothing, on this row. It is the houseplant phrasing of a question already tracked as `dr-<slug>`, and the watering guidance that would answer both belongs on the profile.

  • how often to water a fittonia Same question, answered elsewhere

    Nothing, on this row. It is the houseplant phrasing of a question already tracked as `dr-<slug>`, and the watering guidance that would answer both belongs on the profile.

  • how often to water a haworthia Same question, answered elsewhere

    Nothing, on this row. It is the houseplant phrasing of a question already tracked as `dr-<slug>`, and the watering guidance that would answer both belongs on the profile.

  • how often to water a heartleaf philodendron Same question, answered elsewhere

    Nothing, on this row. It is the houseplant phrasing of a question already tracked as `dr-<slug>`, and the watering guidance that would answer both belongs on the profile.

  • how often to water a hippeastrum Same question, answered elsewhere

    Nothing, on this row. It is the houseplant phrasing of a question already tracked as `dr-<slug>`, and the watering guidance that would answer both belongs on the profile.

  • how often to water a hoya Same question, answered elsewhere

    Nothing, on this row. It is the houseplant phrasing of a question already tracked as `dr-<slug>`, and the watering guidance that would answer both belongs on the profile.

  • how often to water a jade plant Same question, answered elsewhere

    Nothing, on this row. It is the houseplant phrasing of a question already tracked as `dr-<slug>`, and the watering guidance that would answer both belongs on the profile.

  • how often to water a kentia palm Same question, answered elsewhere

    Nothing, on this row. It is the houseplant phrasing of a question already tracked as `dr-<slug>`, and the watering guidance that would answer both belongs on the profile.

  • how often to water a lemongrass Same question, answered elsewhere

    Nothing, on this row. It is the houseplant phrasing of a question already tracked as `dr-<slug>`, and the watering guidance that would answer both belongs on the profile.

  • how often to water a monstera Same question, answered elsewhere

    Nothing, on this row. It is the houseplant phrasing of a question already tracked as `dr-<slug>`, and the watering guidance that would answer both belongs on the profile.

  • how often to water a moth orchid Same question, answered elsewhere

    Nothing, on this row. It is the houseplant phrasing of a question already tracked as `dr-<slug>`, and the watering guidance that would answer both belongs on the profile.

  • how often to water a parlour palm Same question, answered elsewhere

    Nothing, on this row. It is the houseplant phrasing of a question already tracked as `dr-<slug>`, and the watering guidance that would answer both belongs on the profile.

  • how often to water a peace lily Same question, answered elsewhere

    Nothing, on this row. It is the houseplant phrasing of a question already tracked as `dr-<slug>`, and the watering guidance that would answer both belongs on the profile.

  • how often to water a peperomia Same question, answered elsewhere

    Nothing, on this row. It is the houseplant phrasing of a question already tracked as `dr-<slug>`, and the watering guidance that would answer both belongs on the profile.

  • how often to water a pothos Same question, answered elsewhere

    Nothing, on this row. It is the houseplant phrasing of a question already tracked as `dr-<slug>`, and the watering guidance that would answer both belongs on the profile.

  • how often to water a rubber plant Same question, answered elsewhere

    Nothing, on this row. It is the houseplant phrasing of a question already tracked as `dr-<slug>`, and the watering guidance that would answer both belongs on the profile.

  • how often to water a snake plant Same question, answered elsewhere

    Nothing, on this row. It is the houseplant phrasing of a question already tracked as `dr-<slug>`, and the watering guidance that would answer both belongs on the profile.

  • how often to water a spider plant Same question, answered elsewhere

    Nothing, on this row. It is the houseplant phrasing of a question already tracked as `dr-<slug>`, and the watering guidance that would answer both belongs on the profile.

  • how often to water a string of hearts Same question, answered elsewhere

    Nothing, on this row. It is the houseplant phrasing of a question already tracked as `dr-<slug>`, and the watering guidance that would answer both belongs on the profile.

  • how often to water a string of pearls Same question, answered elsewhere

    Nothing, on this row. It is the houseplant phrasing of a question already tracked as `dr-<slug>`, and the watering guidance that would answer both belongs on the profile.

  • how often to water a swiss cheese vine Same question, answered elsewhere

    Nothing, on this row. It is the houseplant phrasing of a question already tracked as `dr-<slug>`, and the watering guidance that would answer both belongs on the profile.

  • how often to water a syngonium Same question, answered elsewhere

    Nothing, on this row. It is the houseplant phrasing of a question already tracked as `dr-<slug>`, and the watering guidance that would answer both belongs on the profile.

  • how often to water a zz plant Same question, answered elsewhere

    Nothing, on this row. It is the houseplant phrasing of a question already tracked as `dr-<slug>`, and the watering guidance that would answer both belongs on the profile.

  • shrubs for pots and containers Same question, answered elsewhere

    The same question is already tracked under another family. Kept so the phrasing is findable; the canonical entry is the one to act on.

  • evergreen trees Partly answered

    The hub answers this from the same fields. No collection has been authored for it, and the hub may well be the right home for it permanently.

  • trees for shade Partly answered

    The hub answers this from the same fields. No collection has been authored for it, and the hub may well be the right home for it permanently.

  • evergreen climbers Same question, answered elsewhere

    The same question is already tracked under another family. Kept so the phrasing is findable; the canonical entry is the one to act on.

  • climbers for pots and containers Partly answered

    The hub answers this from the same fields. No collection has been authored for it, and the hub may well be the right home for it permanently.

  • evergreen grasses Partly answered

    The hub answers this from the same fields. No collection has been authored for it, and the hub may well be the right home for it permanently.

  • grasses for pots and containers Partly answered

    The hub answers this from the same fields. No collection has been authored for it, and the hub may well be the right home for it permanently.

  • grasses for shade Partly answered

    The hub answers this from the same fields. No collection has been authored for it, and the hub may well be the right home for it permanently.

  • evergreen ferns Partly answered

    The hub answers this from the same fields; a dedicated collection is withheld because it near-duplicate.

  • ferns for pots and containers Partly answered

    The hub answers this from the same fields. No collection has been authored for it, and the hub may well be the right home for it permanently.

  • ferns for shade Partly answered

    Retired in Sprint 21 rather than withheld — 8 of 9 ferns qualify (89%). Shade is what a fern is for, so filtering ferns by shade excludes one plant and teaches nobody anything. The distinction that does divide the group is moisture, which 'Ferns for dry shade' publishes; the general question is the hub. The hub is the canonical answer and a dedicated page should not be authored.

  • bulbs for shade Partly answered

    The hub answers this from the same fields. No collection has been authored for it, and the hub may well be the right home for it permanently.

Lists we are not publishing yet

A structured catalogue can generate thousands of “X for Y” pages automatically. Almost all of them would be thin and near-identical, so each candidate has to clear four gates before it gets a URL.

Why this table exists

37 of 41 candidate lists currently pass. The rest are here with the gate they failed and what would unblock them — which is nearly always “author more records in this area”. That turns the search-visibility backlog into an editorial work queue rather than a reason to generate pages.

Candidate listQualifying plantsStatusWhat would change it
Soft fruitcategory × space12 of 21 (57%)Published
Fruit for a small gardencategory × space8 of 21 (38%)Published
What actually grows well without soilcategory × system14 of 102 (14%)Published
Vegetables for a shallow containercategory × space14 of 47 (30%)Published
Herbs that keep producing on a windowsillcategory × system21 of 33 (64%)Published
What actually needs a greenhousecategory × system11 of 102 (11%)Published
What a polytunnel earns its keep forcategory × system48 of 102 (47%)Published
Vegetables for a shady gardencategory × light26 of 47 (55%)Published
Herbs for shadecategory × light14 of 33 (42%)Published
Herbs for a small potcategory × space14 of 33 (42%)Published
Herbs worth a greenhousecategory × system14 of 33 (42%)Published
Crops for small spacescategory × space36 of 102 (35%)Published
Crops for shallow containerscategory × space29 of 102 (28%)Published
Straightforward crops to start withcategory × space59 of 102 (58%)Published
Vegetables for heavy claycategory × soil18 of 102 (18%)Published
Crops for chalky, alkaline soilcategory × soil14 of 102 (14%)Published
Crops for light sandy soilcategory × soil40 of 102 (39%)Published
Crops for shallow soil over rockcategory × soil37 of 102 (36%)Published
Crops for a new-build gardencategory × soil24 of 102 (24%)Published
Crops for acid, peaty soilcategory × soil2 of 102 (2%)Too few resultsNeeds 4 more qualifying growables in the catalogue.
Houseplants for low lightcategory × indoor-light6 of 35 (17%)Published
Houseplants listed as non-toxic to cats and dogscategory × indoor-light11 of 35 (31%)Published
Houseplants for low light that are listed as non-toxic to cats and dogscategory × indoor-light1 of 35 (3%)Too few resultsNeeds 5 more qualifying growables in the catalogue.
Plants for dry shadecategory × light46 of 223 (21%)Published
Shrubs for a shady borderhabit × condition13 of 26 (50%)Published
Shrubs for dry shadehabit × condition7 of 26 (27%)Published
Garden plants for heavy clayhabit × condition6 of 48 (13%)Published
Trees for a small gardenhabit × condition4 of 9 (44%)Too few resultsNeeds 2 more qualifying growables in the catalogue.
Evergreen shrubs for winter structurehabit × condition16 of 27 (59%)Published
Bulbs you plant once and leavehabit × condition12 of 18 (67%)Published
Evergreen climbershabit × condition7 of 12 (58%)Published
Climbers for a north-facing wallhabit × condition6 of 12 (50%)Published
Ferns for dry shadehabit × condition6 of 9 (67%)Published
Ferns that stay green through winterhabit × condition6 of 9 (67%)Duplicate setCovered by "Ferns for dry shade". Publish this only if the two sets diverge.
Shrubs for pots and containershabit × condition17 of 26 (65%)Published
Evergreen shrubs for a pothabit × condition10 of 26 (38%)Published
Trees for a large containerhabit × condition6 of 9 (67%)Published
Bulbs for potshabit × condition12 of 18 (67%)Published
Bulbs that need lifting over winterhabit × condition6 of 18 (33%)Published
Evergreen shrubs for shadehabit × condition10 of 26 (38%)Published
Perennials that look after themselvescategory × space96 of 170 (56%)Published

4 candidate lists withheld, of which 3 would be resolved by more records and 1 would not. None of them has a URL — an unpublishable intersection is not a page that 404s, it is a page that was never generated.

Questions we have stopped asking

The other half of the same discipline, and the half that is easy to leave out. A withheld list is waiting for data; these are lists that will never be published however much data arrives, and saying so is what stops them coming back.

Why a retirement is a finding rather than a deletion

Every entry below was measured before it was judged, and most of them failed in a way that looks identical from the outside to the ones a bigger catalogue does fix. “Fruit that crops without a partner” returned eighteen of twenty-one fruit, which reads as a catalogue too small for the filter to select within — until you narrow it to the tree fruit where pollination is actually a decision and get seven of nine, because only apple and pear need a partner. More fruit makes it worse. That is not a backlog entry, and leaving it looking like one is an invitation to weaken the gate.

QuestionWhy it is retiredWhat answers it instead
Fruit that crops without a pollination partnerSprint 21 · Nearly everything the question is about qualifies, so the filter tells the reader nothing — and a bigger catalogue would not change that.18 of 21 fruit qualify (86%). Narrowing to the tree fruit where pollination is genuinely a decision gives 7 of 9 (78%), because only apple and pear need a partner in this catalogue — so the question is share-blocked at both scopes, and adding fruit moves it the wrong way. Self-fertility is an exception worth two sentences, not a list./fruit/pollination
Fruit for containersSprint 21 · Another question already answers this need, and two names for it is one page.18 of 21 fruit qualify (86%) — almost all fruit takes a pot. Re-scoped to the honest version, compact fruit assessed for containers, it returns 9 plants that overlap 'Fruit for a small garden' at a Jaccard of 0.89, above the 0.85 near-duplicate threshold. The re-scoping produced a page that already exists./collections/fruit-for-small-gardens
Vegetables for containersSprint 21 · Nearly everything the question is about qualifies, so the filter tells the reader nothing — and a bigger catalogue would not change that.42 of 47 vegetables qualify (89%). A container is not a filter on vegetables; depth is. Re-scoped to rooting depth, which is the constraint that actually decides whether a trough works, and published as 'Vegetables for a shallow container' at 14 of 47 (30%)./collections/vegetables-for-shallow-pots
Vegetables for raised bedsSprint 21 · The list separates plants, but not along a line anybody is choosing on.43 of 47 vegetables qualify (92%), and the four that do not are excluded by depth rather than by the bed. A raised bed is a box of soil: it changes when you sow and how you water, and it excludes almost nothing. The useful content is the method page, which is about the structure, not a list of crops that tolerate it./methods/raised-bed
Ferns for a shady gardenSprint 21 · Nearly everything the question is about qualifies, so the filter tells the reader nothing — and a bigger catalogue would not change that.8 of 9 ferns qualify (89%). Shade is what a fern is for, so filtering ferns by shade excludes one plant and teaches nobody anything. The distinction that does divide the group is moisture, which 'Ferns for dry shade' publishes; the general question is the hub./garden/ferns
Ornamental grasses and sedgesSprint 21 · The group is small enough that its own hub is the better answer.6 of 6 qualify (100%) — the candidate names two groups and applies no criterion at all, so it is the hub with a different URL. Six records is also too few for any filter within them to reach the minimum of 6, which the shade, evergreen, container and drought variants all confirmed at 2, 3, 4 and 4./garden/grasses
Plants for a windy coastal gardenSprint 21 · The title claims something the catalogue holds no field for. The honest version of this page cannot be built from the data.34 of 45 qualify (76%), but the more serious finding is what the filter is made of. The page claims salt-laden wind and GrowingHQ holds no salt-tolerance field; the query approximates it with frost exposure and drought, and frost exposure excludes 0 of the 34 woody ornamentals in scope. The list was being built almost entirely out of a criterion that rejects nothing, under a heading that promises the hardest filter in gardening.Nothing — the question needs a field GrowingHQ does not hold.
What grows well hydroponicallySprint 21 · Another question already answers this need, and two names for it is one page.The same reader question as 'What actually grows well without soil', asked of a weaker field: this candidate read the growing-system rating and returned 30, the surviving one reads the hydroponic verdict recorded on the plant and returns 17. They overlap at a Jaccard of 0.57, so the near-duplicate gate could not catch it — identical intentions are an editorial judgement the arithmetic cannot make. Both are withheld on data coverage, so this retires a duplicate rather than an answer./coverage
Herbs for hydroponicsSprint 22 · The list separates plants, but not along a line anybody is choosing on.The candidate existed to record that GrowingHQ had assessed almost no herbs for soilless growing. Sprint 22 assessed 23 more, and the question dissolved rather than resolving: at the inclusive verdict it returns 26 of 33 herbs, at the strict verdict 5, and there is no threshold between them that is a page. The herb catalogue does not divide on soilless suitability — almost every herb is at least conditional — and the five genuinely well suited are already the herb half of 'What actually grows well without soil'./collections/crops-for-soilless-systems