I have verbena flowers and when I come to taking off the old buds I can't tell which ones have bloomed and which ones are ready to bud out would appreciate your answer thank you

Verbena | Garden Basics | Flower | Annual | Plants (http://www.gardenguides.com/plants/info/flowers/annuals/verbena.asp) . I usually just leave mine be an when the old petals start turning brown I pick them off. I hope this site helps you out.