Sweet Potato - light raised bumps on leaves

**waterleat** · 28-04-2012, 12:09 PM

Sweet Potato - light raised bumps on leaves

First time growing sweet potato.
I bought 5 organic tubers from supermarket, placed in pots to sprout
The first one to sprout has those bumps as in the picture in first post
The next 2 plants are fine stored separately.
The last 2 are a bit slow at sprouting but are starting to have those spots

What are they

**mcuk** · 28-04-2012, 12:31 PM

I've never grown sweet potato, but could it be Oedema? Caused by container plants being over-watered - particularly at night.

**waterleat** · 28-04-2012, 06:35 PM

never heard of that before. read another site said put alcohol on leaves. I tried it with gin and the spot shrivelled to dark brown specks. Plant looks ok where it had gin treatment I will look into the watering schedule

**mcuk** · 28-04-2012, 06:46 PM

You can read more about it at the link below, it's not just watering, but it often happens when giving too much water at night, so worth a check to see if it is happening due to something else:

GP03 - EDEMA

**Leeds_lad** · 28-04-2012, 11:57 PM

Happens to pretty much all the nightshade plants. Basically the plant takes up too much water (usually after watering too late in the evening/at night) and has no where to put it. It stores this excess water in the cells in the leaves, causing them to swell. After a few days you will notice the bumps will have gone down but will have light brown patches where the cells have exhausted themselves. It's completely harmless =)

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Sweet Potato - light raised bumps on leaves

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