What Edema Looks Like

Blistered, corky, or watery bumps on the undersides of leaves..

Why It Happens

Roots take up water faster than leaves can use it in low light..

How to Fix It

Water less and raise light levels; the bumps are cosmetic and won't spread..

Stopping It Coming Back

Match watering to light and temperature.. It is most active in winter, so stay extra watchful then.

Frequently Asked Questions

Q: Will Edema spread to my other plants?

A:

Yes, most pests move fast -- isolate the affected plant the moment you spot it.

Q: Can I use the same treatment for everything?

A:

Neem oil and insecticidal soap cover most soft-bodied pests, but root rot and fungal issues need a different (drier) approach.

Q: How long until it is gone?

A:

Expect 2–3 weekly treatments before you stop seeing signs.

Q: Should I throw the plant away?

A:

Rarely. Most outbreaks are reversible if you act early and stay consistent.

Catching Edema early is half the battle. Keep our pest identifier tool bookmarked and check new growth every time you water.