I have a small greenhouse in Virginia (zone 7b) where I winter over my geraniums. They are starting to send out blooms now; however, some of the stems (very close to the buds) look curled over and have what looks like a healed over split or crack in them. It's unsightly but doesn't seem to affect the bloom. What could be causing this?
Submitted by BHGPhotoContest


Thanks for writing. Without being able to see your geraniums in person, I can't say for sure what the problem is.

There's a problem called oedema that's fairly common on geraniums; when they get more moisture than they need, their cells rupture. When this happens, they develop weak points on their stems or tan bumps on their leaves.

If the look of the stems bothers you, you could take cuttings from your geranium plants and start new plants.

Senior Garden Editor,
Better Homes and Gardens

Answered by BHGgardenEditors