6/5/15: In the garden this week

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Junegrass (Koeleria macrantha) and penstemon (Penstemon digitalis) in bloom signal the beginning of summer in my garden.

Finally, rain this week: well over two inches of it. The plants responded by suddenly putting on their summer colors (see the photos below). I responded with a burst of renewed activity, returning to the moving and dividing of perennials that had ceased while the weather was so hot and dry. It’s been delightful.

The calendar says late spring, but to me, once the penstemon blooms, it’s summer. Spring blooming plants are finishing up, and many summer bloomers, particularly the milkweeds, are showing buds. The foliage of the perennials is particularly beautiful this time of year: everything looks fresh and green, and you can focus on the leaf shapes and textures rather than on the flowers.

Here are some other things you might attend to while you’re out there admiring your garden this weekend:

water new plantings: we got over two inches of rain this past week, so no watering is needed now, but keep watching. Any week in which we receive less than an inch of rain, 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. A tunafish or catfood can works equally well.

finish harvesting early greens such as lettuce, spinach, arugula, mustard greens, and mesclun mix, plus peas and radishes. As greens bolt, or go to seed, pull the plants and plant something else. A row of beans, perhaps?

warm-season crops should be out in the garden. These include tomatoes, peppers, squash, eggplant, beans, corn, and cucumbers. Look at this post, this one, and this one for basic information about growing tomatoes.

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.

— now that 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 to kill the grass. Then plant right through the dying grass and mulch.

— follow a sustainable lawn care regimen: if you feel you must fertilize your lawn, best practice is to give it no more than two applications of slow-release organic fertilizer each season, around Memorial Day and Labor Day. It’s too late now to reseed bare areas: wait until early fall. 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 infrequently and deeply to encourage deep root growth. One inch of water once a week is much better than a few minutes each day. But remember: the more you water, the more you’ll have to mow!

Enjoy the garden this weekend!

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Firepink (Silene virginica) is in bloom now. Only a bit over a foot tall, this plant enlivens the early summer garden with really, really red flowers.

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And if you prefer yellow, sundrops (Oenothera fruticosa) is hard to beat. Also only about a foot tall, it is completely drought resistant and easy to grow. This plant spreads by rhizomes, so it is also very easy to divide.

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