Tea gardens too acid: tolerant is not ‘the more acid the better’
Don’t push tea to neutrality; don’t treat tea like grain.
- Grain land aims higher; taking a tea garden to neutral hurts the bushes.
- Nitrogen shortage yellows old leaves; too much acid is poor roots and small leaves.
- Don’t push tea to 6.5–7 like grain; don’t treat extra-acid as hunger without a test.
- Lifting tea-garden pH (only when pH is below 4.0): Agricultural lime: a tiny soil-test rate, split. Stop in the 4.5–6.0 band. Never copy a grain-land 50–150 kg
- Name what you see before you feed.
- If leaves, roots and the surface disagree, stop.
What you see in the field
The bush lives but leaves are small, shoots short, roots poor. soil taken the tea row alone, not mixed with grain.Walk the worst strip. Pull one plant, rinse the roots at the ditch without rubbing the tips, and read white tips versus brown bald ones. A rusty film on water is extra, not required. Grain land and tea do not share a pH target.
Tap to enlarge. The caption says what to photograph. Missing field photos are marked as to-be-added.
Why it looks like this
The field looks like this because the root cannot take water or nutrients the usual way. Fix the soil condition first — drainage, salt, acidity, compaction or a salt of fertiliser — then a thin feed. Rates live in the range on this page; confirm with a local station and the label.
Easy to mix up
Looks like “Acid grain land”
Grain land aims higher; taking a tea garden to neutral hurts the bushes.
Looks like “Nitrogen shortage”
Nitrogen shortage yellows old leaves; too much acid is poor roots and small leaves.
Do this / don’t do that
- 1Compare the worst plants with a neighbour ridge. Photograph whole plant, close-up and soil surface before you add fertiliser.
- 2Match roots, leaves and the soil surface to this guide. If they do not line up, do not copy a bag count.
- 3Use the rate range on this page only as a range. Confirm with a local station and the product label.
Don’t do this first
- Don’t push tea to 6.5–7 like grain; don’t treat extra-acid as hunger without a test.
Rate range
Lifting tea-garden pH (only when pH is below 4.0)
Agricultural lime: a tiny soil-test rate, split. Stop in the 4.5–6.0 band
Never copy a grain-land 50–150 kg.
These are ranges. Confirm with your local extension station and the product label.
When you see The bush lives but leaves are small, test. Take soil from the bad patch and from a greener neighbour, separately.
Lesson video
2026-03-04 · Li Zeyu · For learning. Serious damage: local agronomist or a soil test.
For learning only. Fertiliser and pesticide decisions need a local agronomist and a soil test.
Not sure? Photograph the field to identify the problem