5/15/15: In the garden this week

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Flowers of columbine and false Solomon’s seal, and foliage of mayapple, white snakeroot, several different shade asters, among others grace a shady perennial border.

Mid-spring is my favorite time in my garden. The shade gardens in both the front and backyards burst into bloom, and although they’re not as colorful as the summer prairie gardens, they have their own quiet charm. As you can see, I like to plant many different species close together (it helps fool the rabbits and deer). In spite of the extremely dry spring we’re having, I have not watered these gardens.

In addition to admiring your handiwork, here’s what you could be doing in the garden this week:

— the soil is very dry, so water new plantings: Water the plot thoroughly before planting, and give all newly installed plants a good soaking as soon as you put them in the ground to settle them in and eliminate air pockets in the soil. Any week in which we receive less than an inch of rain (like this week and last week), water all woody plants installed this spring or last season. Perennials planted last spring should be well-established, but those planted last fall and this spring need supplemental watering during dry spells. How do you know when we’ve received an inch of rain? I use a highly sophisticated rain gauge–an old yogurt container placed on the ground among the plants.

harvest early greens such as lettuce, spinach, arugula, mustard greens, and mesclun mix, plus peas and radishes.

— If you started warm-season crops indoors, set them out in the garden now. It’s finally time to set out your tomatoes, peppers, squash, and eggplant.

— now that almost all perennials have emerged, move and divide plants as necessary. This is the best time to divide perennials: root systems are small and easy to handle, and plants recover fastest this time of year. But be sure to water the plot before doing any planting. The soil is very dry.

— it’s not too late to extend a garden bed or start a new one, and it’s always a great idea to eliminate some lawn: spread a 3-4 inch layer of cedar or hemlock bark mulch over the area now to kill the grass. Then plant right through the dying grass and mulch.

— follow a sustainable lawn care regimen: wait until Memorial Day to fertilize. If you reseed bare areas, be sure to water often. Better still, if you have a place where grass won’t grow, plant something that will, like shade-loving native perennials. Lawns do not need water now (or ever), but if you do water, do it less frequently and more deeply to encourage deep root growth.

Enjoy your garden this weekend!

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Virginia waterleaf, an excellent groundcover or flowering perennial for dry shade, opens its first flower; Solomon’s seal is in the background.

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