5/29/15: In the garden this week

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The highlight of the late-spring shade garden is Canada anemone (Anemone canadensis), a plant that spreads a bit too enthusiastically. Also in bloom are columbine, native geranium, and Virginia waterleaf. It looks like the sweet joe pye weed will be as tall as it was last year.

Late spring ushers in lovely blooming shrubs: ninebark, grey dogwood, and, very soon, elderberry. The first summer perennial–in my garden, that means Penstemon digitalis–is just open, and many others are showing buds. All the vegetables are planted. Because it’s been so dry, there’s not much weeding to do. It’s almost summer!

But there are always things to do in the garden:

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 the past three weeks), 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.

harvest 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?

— 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, eggplant, beans, and cucumbers.

— 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 now 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. If you reseed bare areas, be sure to water often, especially now that the weather is hot. Lawn grass is really adapted to a much cooler climate than outs. 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 week!

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A detail of that lovely anemone. If you plant it, be sure it has room to spread.

Flower cluster of grey dogwood (Cornus racemosa), the loveliest dogwood of all.

Flower cluster of grey dogwood (Cornus racemosa), the loveliest dogwood of all.

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