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Mon, Jul 6, 09 at 17:18
| I have a Chinese Sweet plum in fairly good health, but there are ongoing leaves that develop leaf tip browning which eventually changes the whole leaf brown. I would guestimate about 20% of the tree is affected, yet new foliage is growing without issue. The plant does not appear root bound and I was keeping the soil moist with regular watering but I try to avoid overwatering.
Thoughts? Suggestions?
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Follow-Up Postings:
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| The most common causes are over/under-watering, too high a level of soluble salts in the soil (plasmolysis aka fertilizer burn), too much sun @ midday. The 'over-watering' issue could be from a collapsing or poor soil, even if you think you're not over-watering. When you're growing in a shallow pot, even a soil that supports only a half inch of perched water is unacceptable. If your pot is 3" deep and the bottom 1/2" of the soil is saturated, that is about 17% of the soil saturated - enough to root roots, impair root function, and cause the marginal or tip necrosis you inquire about. Al |
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