Why are my zinnias dying?

Zinnias are annuals. At the end of their lives Zinnias set seed, dry up and die. From your description your zinnias have reached the end of their lives.





The best way to check is to break open a deadhead and look for seeds? (The dead head is the chaff structure left where the petals fell off.)





In the southern hemisphere it is the middle of winter and all zinnias have died. You may have a zinnia that is working on Southern hemisphere seasons, or because of your great care, the Zinnias rushed through their life cycle faster than usual.





Collect the seeds form the deadheads and plant them next spring. Next year don't spoil your plants so much and they will bloom for longer.

Why are my zinnias dying?
I planted these in mid april and they were already in bloom. I also live in Tennessee Report It

Reply:This may not be the reason but most plants are killed by poor drainage and over watering,
Reply:you have to give us some hints for your question..decribe the problem.
Reply:I just planted 2 zinnia's in the front of my house with full sun in south Florida. I water them daily or Mother Nature does and they are doing well. The soil is straight potting soil and not real deep, under it is pea rock and plastic to keep the weeds down.





It all depends on where you have them (sun wise)and watering. Once established I use KGRO (Kmart's answer to Miralce grow) all plant fertilizer bi-weekly. It is great for even roses.





Jode'
Reply:maybe to much sun, my dear did you know plants get sun burn also? give them some mirical grow, you get it any where plant supply are sold. you want to get blue flowers? feed them some alluniam sulfate, you get blue flowers next year. works on other plants also, but i not telling rite now.
Reply:Zinnias like it kind of dry so you might have over watered them. They are also susceptible to powdery mildew, has there been a white/gray powdery stuff on the leaves? You can get spray for mildew at most garden centers. If this is the problem then it might be a good idea to only water at the base of the plant in the morning and avoid getting the leaves wet or watering in the evening.





good luck.