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Perennial Planting

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Amsonia tabernaemontana 'Blue Star'
Photo Credit: Felder Rushing
Blue star not only blooms in spring, it provides great fall color with its foliage.
So you’ve wisely decided to plant perennials in your garden (or maybe you’ve inherited a few). But now what?

When planting perennials, the most important issues revolve around using the right plant for the right place. Sun-loving perennials will obviously not prosper in a shady spot, and shade-loving plants may wither, yellow – or even die – in full sun. Know your growing conditions before you plant! There are perennials for every climate and condition – just make sure you match them up. For example, I have a continually moist place in my garden that receives a lot of sun. I needed a perennial planted there that would like those conditions, but I also wanted one that would grow no taller than about 12 inches, have fine texture, offer seasonal interest, and sport pink or purple flowers. I chose germander (Teucrium chamaedrys), and it’s flourishing.

Your garden soil is like your house foundation. Make sure your soil is right, and plants should thrive where they’re planted for years. I like to work compost, manure, old leaves and even shredded bark mulch into the soil before planting to increase organic matter content. (Give that a try, and your perennials will thank you for it.)

Where I am in Ohio, we must be vigilant about good drainage in our clay-heavy soils. I used to tell my students, “Twice as wide, about as deep and a mound in the middle.” That means the hole should be dug twice as wide as the rootball to allow for a nicely mixed backfill of garden soil, maybe some peat moss or compost and a little granular fertilizer – all tossed like a salad before putting back in the hole around the plant.

Warnings
  • If you worked in lots of organic matter before planting, you may need to add fertilizer high in nitrogen (N) initially. (The organisms that break down the organic matter can rob your soil of Nitrogen.)
Tools
  • Before you start planting, consider having a soil test done by your state Extension Service to see what additives your soil may need to help your garden grow.
Definitions
  • Chlorosis: A diseased condition in which a plant looses its healthy green color and starts to turn yellow. (This can be due to insects, disease or nutritional problems.)
Resources
  • Scan our Learn2Grow site for more information, post a question or two in our forums, ask your neighbors, contact your local Cooperative Extension Service or read a local expert’s advice on perennial planting, care and maintenance.
 
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  • Perennial Care & Maintenance
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