Hydrangeas, Camilias & Hibiscus

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poodlelady Palo Alto, CA Sep 06, 2008

Help! Very random leaves on all three plants are turning completely yellow. Why? What can I do about it?

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ecrane3 Dublin, CA(Zone 9a) Sep 06, 2008

Can you post some pictures? My first suspect is always watering since that's such a common thing that can go wrong. With the hibiscus especially (at least if it's a tropical one) if they are alternating between drying out a bit too much and then getting a big drink of water they're very temperamental and will get some yellow leaves that often fall off. This happens to mine a lot when we're having hot weather because it's hard to keep the moisture level consistent in the heat. The camellias are acid lovers and a lot of people around here have soil that's a bit on the alkaline side, so if the leaves are mostly yellow but the veins are green it could be chlorosis--this can be caused by lack of iron, which can be caused either by an actual lack of iron or by your soil pH being too high for the plant to absorb iron. Hydrangeas can get chlorotic sometimes too. Or for both of them it could be watering related too. But there are probably lots of other possibilities too so if you can post a picture that might help narrow things down.

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WeeNel Ayrshire Scotland, United Kingdom Sep 06, 2008

I agree, a picture would really help us to offer you the best advice as mentioned by Ecrane, there are lots of possible troubles to look out for, my guess is the soil is wrong for the type of plants you are trying to grow, let us know when you planted them, sun / shade etc as this will be another indicator. good luck. WeeNel.

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