Sweet Peas

"Sweet peas are very old flowers," says seedsman Renee Shepherd. "They're all heirlooms. The first sweet pea was discovered by a monk on an island off the coast of Sicily in 1699." By the 19th century, hybridizers began cultivating larger, more colorful versions of the sweet pea--similar to the flowers we know and love in this century.

Most of the varieties planted today are vining annuals, but there are also some cold-hardy perennial forms that come back year after year from the roots. Or maybe you need a groundcover? Explorer sweet peas are knee-high varieties that grow about 2-1/2 to 3 feet tall. You can have them in all of your beds and borders without needing vertical climbing vines.

And you can still find species sweet peas reminiscent of those discvoered by the Italian monk of centuries past.

Sweet peas are considered cool-season annuals. They shine when the temperature is cooler than 85, but nothing spells defeat like drying wind and heat.

If mild weather is fleeting in your neck of the woods, the sheer number of blooms that you'll get even in a short period of time makes sweet peas well worth the effort. You may just need a few of Shepherd's tricks of the trade:

When to plant. In mild climates, you can actually plant sweet peas in the fall to overwinter and develop their root system and then burst into bloom in early spring. For colder climates, plant early in the year for late-spring blooms. Seeds germinate best when the soil temperature is between 55 and 65 degrees. For optimum results, Shepherd uses rich, well-drained soil.

How to plant. Prepping the bed is easy; just work the soil and break up any clumps. Adding aged compost gives the soil tilth.