5/8/15: In the garden this week


The exquisite flowers of chokeberry (Aronia melanocarpa) are in full bloom. In August, birds will be eating the large, black berries.

I’m spending a lot of time right now finding native plants for clients. Because of the late spring, most nurseries will receive all their spring plant shipments this week and next week, so this is the time to get out there and ask local nurseries for native plants (you’re shopping for mom anyway, right? Go to the website of the Native Plant Society of NJ for cards you can print, fill out, and give to nursery owners to request specific native plants. If we don’t ask, they won’t know we want them!  I’m happy to say that more and more local nurseries are stocking more and more natives, but there’s still plenty of barberry and purple loosestrife out there as well, so be careful when you buy.

The spring is advancing fast. Serviceberry is finished blooming; flowering dogwood, lilacs, and crab apples (Mother’s Day plants) are just about at their peaks; ferns are unfolding, and many local flowering natives, like jack in the pulpit, spring beauty, trout lily, and Solomon’s seal, are in full bloom. This would be a beautiful weekend to explore a local natural area like the Thielke Arboretum in Glen Rock. Take a walk in the woods, admire the native wildflowers, and notice the progress we’ve made in removing the garlic mustard over the past couple of years. (And if you see garlic mustard, pull it now. For the most part, it hasn’t set seed yet.

And after you buy Mom a plant and take her for a nice walk in the woods, help her attend to her garden:

— 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 cold-season crops indoors, set them out in the garden now. Wait until late May to set out tender crops such as tomatoes, peppers, squash, and eggplant. the nights are still quite cool.

— now that most 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.

evaluate the winter’s damage on your property. Don’t remove dead wood or broken branches unless they pose hazards to people or property, because they might be supplying food or shelter to winter-weary creatures, but see what needs doing. Do any areas need new mulch? Do your evergreens need spring pruning to remove winter damage? Do it as soon as new growth appears.

— 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.

monitor your garden for bird activity. Birds are very active at foraging and nest building. If you’re not seeing this, maybe your garden lacks food. There should still be perennial seeds, berries of less desirable plants, and leaf litter and dead wood for the birds to search for insects. If you’re not seeing birds, consider what you can do this season to attract them: for example, plant native perennials, stop pruning dead wood quite so aggressively, stop using pesticides.

— 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 the beautiful Mother’s Day weather!


Foamflower (Tiatella cordifolia) a diminutive groundcover, is in full bloom now. After the flowers fade, the variegated leaves will provide visual interest all season. On the left is a columbine, which is showing buds but isn’t quite in bloom yet.


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