Petunias are among the most popular of annual flowers — and for good reason. They’re easy-care and long-blooming, and come in just about every color you can imagine.
If the plants have a downside, it’s that they’re heavy feeders, just like a hungry teenager. After all, it takes a lot of nutrients to keep producing all those big, beautiful flowers!
Consequently, some gardeners find the plants tend to slow down in midsummer. Prevent this by keeping your petunias well fed with a balanced, general-purpose fertilizer. Follow the directions on the packaging for a guide on how much to use and how often to use it. (Tip: Fertilizer is not one of those things where you can say if some is good, more is better; too much fertilizer can harm or even kill plants.)
You may also find it’s helpful to give your petunias, especially older varieties, a haircut. It’s simple — just snip off the top two or three inches of new growth from the plants. It causes them to bush out more, producing more branches along the plants so there’s an even distribution of flowers instead of all the blooms being at the ends of the stems.
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