My Shasta daisy were beautiful, now all the flowers are dead?

See if this help: http://homeguides.sfgate.com/care-wilting-daisy-61345.html

Good luck

It sounds pretty normal to me!! My daisies have all bloomed and now died down. Most Perennials (even though they are a "Perennial") do have a certain "bloom time". This is normal. Simply cut back the dead stems - that had the blooms. You might get lucky and see a return of some blooms but next year, for sure, they will be back!

Research them online. Do they have natural enemy like certain insects that attack them or diseases common for them and what you can do to prevent. If you have nursery in your area you can speak with too and get suggestions.

Do you know the variety of your Shasta? Is this their first season, or are they well established in your garden, and they're not behaving as they have in previous years? Is the problem with the whole plant, or just the blooms? If the plant itself looks healthy and feels sturdy/firm, I doubt that you have a problem.

There are many varieties within the Shasta daisy family, with differing characteristics. That includes bloom time and duration. Is it possible you have a variety that has simply ended its flowering for its bloom season? Many of the earlier bloomers finish flowering in the heat of the summer. Others love the heat. Some hold their blooms for a long time, others, just for a few weeks. Still others bloom in flushes, not continuously. In all varieties, it's important that you keep the spent blooms dead-headed .

Other things that can affect bloom: insects, sudden drop in temperature, overspray of herbicides, overwatering and poor drainage. Underwatering is rarely a problem with well established daisies, as they really hate wet feet. Maybe you're being too kind to your daisies with too much water? Though, if this is the first season for your Shastas, and you've had high temps and little moisture, they could be needing more frequent drinks.

If you've had your shastas for many years, it may be that they've passed their prime. Most perennials benefit from being divided every few years, usually in early spring or autumn.

I'd check each stem for signs of new flower buds . If the're present, cut the stem back to just above the bud. If there aren't any, cut back the whole plant itself. and see if it reblooms.

I would imagine they are done blooming as are mine. Cut them down and they will come back again.

Shasta daisies are perennial, not annual. That means they bloom for a short time only. To extend the blooming time, deadhead spent blossoms.

See if you don't find this informative: http://extension.illinois.edu/hortanswers/plantdetail.cfm?PlantID=733&PlantTypeID=2

Blooming flowers do not last forever! Deadheading any flowering plant is an important rule to follow for any gardener.

You need to deadhead on a regular basis. That means remove spent flowers so they don't try to set seed. Also, Shasta may just be resting. Cut back the flowering stalks and fertilize. Keep well watered, and they may rebloom when it cools off.