Shasta Daisies Get White Crystals On Yellow Part

Question From: K. Kehler - Langley, British Columbia, Canada
Q: My Shasta daisies get white crystals on the yellow part--why?

A: The crystals are formed from a toxic chemical made by the plant. For more information go to the website http://ucanr.edu/sites/poisonous_safe_plants/Toxic_Plants_by_Scientific_Name_685/ Don't eat the daisies. Best And Happy Yardening, Nancy