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anamandy

Info needed for tall annuals.

6 years ago
last modified: 6 years ago

Hi all, I scaffolded a very old and overgrown Forsythia at the end of the winter. It's coming up nicely and is almost knee high right now. The area where it was at is a big oval bed that looks bare. I decided I wanted to plant it with tall annuals while the Forsythia is growing over the summer. I purchased Cleomes, Rocket Snapdragons, Cosmos, Zinnias, and Salvia. I started with the cleomes in the back, the snap dragons in front of that, the cosmos in front of that, the zinnias, and then the salvia in front. I arranged everything to height according to the tags. I've grown all of the same plants before in a previous garden at another house, but that house was built on the site of a previous dairy farm so everything grew like crazy. Where I live now the soil is very sandy and infertile, and though I have been working with the soil for years it's still sandy and infertile. Also, this is the first time I've purchased flats of plants. I always grew my own plants from seed before. So I'm not sure if there will be any difference there. Anyway, what I need to know is will these plants grow as tall as what the tags claim or should I do something, like use a high nitrogen fertilizer, to get them to grow taller? I don't want to use something like bloom plus because I don't want to encourage blooms until I get the plants at the height I want. So will high nitrogen fertilizer be okay? Also, should I pinch the plants and remove blooms to encourage bushiness? I don't want to do that if it will inhibit height though. This area is full sun. The Forsythia will still receive full sun all day and the annuals will not shade it out because of the position it is in. Any info anyone can give is greatly appreciated. Any suggestions for what fertilizer to use will be appreciated too. Sorry for the long post. Thank you.

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