Apple: lower leaves turning yellow

What it is likely to be on apple

1. Normal autumn leaf fall

   May be normalvery common on this plant

   ·source

   Sourced guidancehigh confidence

   • Royal Horticultural Society: Trees and shrubs — seasonal change

   Checked 2026-08-13

   A deciduous tree, shrub or cane turning yellow through autumn before dropping its leaves. The plant is withdrawing nitrogen and magnesium out of the foliage and storing them in wood for next spring, which is precisely why the leaves go yellow — the green is being taken back. Diagnosing it as a deficiency inverts what is happening, and the feed that follows arrives at the one time of year the plant has no use for it.

   Points towards it

   • · senescence runs through the entire canopy at once, because it is triggered by day length rather than by anything local to a branch
   • · nothing was done to the tree, and it grew normally all season — which is evidence FOR a seasonal process rather than against it
   • · it is driven by shortening days and cold nights outdoors
   • · old and new wood colour together rather than one ahead of the other

   Argues against it

   • · one branch or one side yellowing while the rest of the tree stays green is not seasonal — nothing about autumn reaches half a tree — this rules it out entirely.
   • · autumn colour takes the veins with the rest of the leaf, so a green vein network held against yellow tissue means something else is going on underneath it
   • · a tree that was recently moved or planted has a much better explanation available for a general yellowing

   Check this next

   Check the date and then check the hedgerow. A fruit tree colouring evenly from September onwards, at the same time as everything else deciduous around it, is doing what it does every year — the yellow is the tree taking its nitrogen and magnesium back out of the leaves and into the wood, which is why a deficiency is the one thing it is NOT evidence for.

   What to do now

   Do nothing, and specifically do not feed — autumn nitrogen on a woody plant pushes soft growth that will be killed by the first hard frost. If the tree carries scab or leaf spot, rake the fallen leaves up and remove them rather than composting them in place, which is a sanitation job rather than a treatment for the colour.

   ·source

   Sourced guidancehigh confidence

   • Royal Horticultural Society: Feeding trees and shrubs

   Checked 2026-08-13

2. Overwatering

   Candidate 2common on this plant

   ·source

   Sourced guidancemoderate confidence

   • Royal Horticultural Society: Apples — problems

   Checked 2026-08-13

   Not a matter of volume but of frequency: roots need air as well as water, and compost that never dries suffocates them. It kills more houseplants than every pest and disease combined, and its cruellest feature is that the early signs — yellowing, wilting, dropping leaves — look exactly like drought, so the instinct is to water more.

   Points towards it

   • · an apple on a dwarfing rootstock has a shallow root system that suffers quickly where water stands in winter
   • · roots short of air starve the whole tree rather than one limb
   • · it follows the drainage of the site

   Argues against it

   • · the ground is dry, so the roots are not waterlogged — this rules it out entirely.
   • · in autumn on an unchanged tree, ordinary seasonal colour is a far likelier reading than root damage

   Check this next

   Dig a hole a spade deep within the spread of the branches, in winter or after heavy rain, and come back to it in an hour. Water standing in the bottom means the roots spend part of every year without air, and the tell above ground is short annual extension growth — measure the length of this year's shoots against last year's, because a waterlogged apple makes progressively shorter growth before the leaves ever say anything.

   What to do now

   Do not add anything to the hole. Improve the surface drainage away from the tree, mulch the root zone with coarse organic matter to build structure, and keep the grass off the first metre around the trunk. On ground that lies wet every winter, the durable answer for future trees is planting on a raised mound rather than into a pit.

   ·source

   Sourced guidancemoderate confidence

   • Royal Horticultural Society: Waterlogging — managing

   Checked 2026-08-13

Narrow it down

This page lists everything at once, which is the right shape for reading and the wrong shape for deciding. The interactive tool asks one question at a time, starting with whichever would separate these causes fastest, and stops as soon as further answers would not help.

Opens with the plant and the symptom already set. Nothing you answer is stored or sent anywhere — the answers live in the address bar and nowhere else.

What this does not cover

These are the causes GrowingHQ holds rules for on apple — not every cause there is. Where several problems look alike, the honest answer is often that they cannot be told apart by eye, and a page that named one would be guessing. If none of the above fits, the general lower leaves turning yellow page lists causes across all plants, and the Apple profile lists the problems it is prone to.