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Help with leaf discoloration problem?

new_mexico_shane

17 years ago

Forum members:

I have a relatively new plumeria plant that I purchased just a couple of weeks ago. It is about 14" tall, with three small branches and 10-12 leaves. It came in a small 4" pot with some sort of planting medium (this was my surprizing find at the local WalMart!). I replanted it immediately into a much larger pot with a good draining soil. Since then it has been spending days on the back patio with daytime temps in the mid- to high-90s and full sun. Recently several of the more mature leaves have started to show a yellow discoloration along the central axis of the stem (see photo). Close inspection has revealed no signs of insect infestation. Anyone have any ideas? Could this be shock from being moved from a low-light level in the WalMart plant section to bright sunlight? Do I keep as I am, or adjust? There have been no other signs of heat stress (wilting, drooping, etc.). I am watering sparingly, and letting the soil dry between waterings. Any ideas anyone?

Shane

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Comments (4)

plume
17 years ago
Shane I am new to the forum and very inexperienced. I just want to tell you that one of my cuttings has the same yellowing as yours a little less, but the same yellowing.

I haven't been overly concerned because the plant is thriving and is very healthy.

I am anxious to see what others have to say.

Plumie
mystwitch
17 years ago
It does look like sunburn. If these are the lower leaves and the new leaves growing from the tip are fine, I would not worry. The plant is aclimating to the brighter conditions. They love sun and heat, I would leave it where it is.

Karen
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tdogdad
17 years ago
This could just be a reaction to a cooler night. Since we are approaching the equinox when the days go from longer than night to shorter, the plant senses this and begins to focus energy on last minute growth and hardening for what is winter, but what the plant thinks is the annual drought. As you approach what you think is a drought, leaves are sucking up water so it is better to thin down the leaves from the bottom up so the plant streamlines to be more efficient.Another cause is that the plant is too close to a radiating heat source (wall or block fence) and the leaves are a bit overcooked. Misting in the late afternoon can sometimes correct this problem. Since it is close to the end of the season, I would not be too concerned if the rest of the plant looks healthy. Bill
Dave in NoVA • N. Virginia • zone 7A
17 years ago
I would concur with sunburn if you've ruled out mite infestation. Who knows how long it was sitting in shade at WallMart?

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