In article .com,
wrote:

I am VERY new to gardening and don't understand why the black-eyed
susans and purple coneflowers i planed just four days ago have already
wilted and died. they're in full sun, as directed, and i watered them
every morning. i've never seen plants die that fast. what did i do
wrong (in that short a time!)?

They got cooked. The height of summer is never the best time of year to
plant perennials. Until these plants have put down a big root system,
high-summer is bound to be threatening, especially to young starts.
Conceivably the root isn't actually dead & will show a little growth in
early autumn, then a lot of growth next spring.

-paghat the ratgirl
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