They wouldn't be taking away from other growing culms, but they might not look pleasing.

Although this past Winter was another mild one, my Oldhamii took a big hit for some reason. The larger culms are all top dead. Last year they did as yours are doing, they remained green, but only a few grew leaves on the upper portions of the culms. They look bad now.

Anyway, any living green part of the plant, whether it is the leaves or culms, will be used in the production of food for further growth. I would leave them, at least until after normal shooting season in late July or early August.

Good Luck

Kt

Thank you Kinder,

I'll leave the old culms there. One benefit will be support for the new culms that tend to break in high winds from our thunderstorms.

-Scott-

I agree with what you said about the thunderstorms and the culms giving added support.

If you are in the Brenham area, you are a bit colder than I am here, and my Oldhamii seem to get freeze burn here but they get more cold hardy with age.

Keep them watered well during cold spells.

Good Luck

Kt