Frost on my mums...

[Kyoko]

Yes, Here in Pittsburgh, we do get frost in the morning now... Brrrrrrr....

But the mums are covered with frost in the morning, and it seems to burn the flowers. Do I supposed to cover them during the night?

[F, Calla & Luca]

I don't know. Are they in pots or planted? It couldn't hurt to cover them I guess but it seems like a lot of work. It might make them last a little longer.