6/30/17: In the garden this week


Rudbeckias will start to bloom very soon: this is Rudbeckia subtomentosa, the earliest one in my garden. It’s a large, tough plant, and it blooms nonstop from late June through September.

As you approach this long Fourth of July weekend, filled with outdoor activities, take some time to reassess your garden: would you like to spend more time enjoying the outdoors and less time on lawn care? would you like to see more birds and butterflies? Do you see fireflies? (You should, unless you poison them with lawn chemicals and insecticides.) Do your plants attract pollinators? (They should, unless they are sterile hybrids.) How could your outdoor environment be more sustainable and environmentally friendly?

Here are some additional seasonal tasks you might address during this long hoiday weekend:

water new plantings: We received almost no rain in the past week, so perennials and woody plants that you planted this spring or last fall need supplemental water: at least an inch of water, not just a little sprinkle. In addition, if you are still planting despite the hot weather, be sure to water well after planting to settle the new plants in the ground. In dry weeks throughout the growing season (weeks with less than an inch of rainfall), you need to water all plants installed this spring or last fall. How do you know when we’ve received an inch of rain? You can make a highly sophisticated rain gauge–an old plastic container or tin can placed among the plants. I total the weekly rainfall and decide whether to water my new trees or my clients’ new plantings each week.

— all vegetables, including tender crops like tomatoes and peppers and corn, should be planted out by now, and it’s time to remove early greens like lettuce and spinach. Water deeply during dry periods, particularly when the weather is hot, and watch carefully for pests and diseases. Removed diseased plants promptly to prevent spread. Remove the flowers from basil plants as they form, and cut down the plants to make pesto as soon as you have enough leaves for a batch. If you don’t grow basil, it’s not too late to buy a flat and plant it out this season.

— be sure to properly tie, stake, and prune your tomato plants. Most tomato cages are much too small: the plants outgrow them before they start to bear fruit. And unless tomato plants are properly pruned, by pinching out the suckers, they will be so bushy that they’ll be especially susceptible to fungus infections like verticillium wilt. You’ll find general guidelines for growing tomatoes here and specific watering instructions here.

—  It’s a bit late to clean up the perennial garden or to divide and replant. Once the weather turns hot, plants put their energy into top growth and blooming. I would no longer move or divide plants, but if you continue to plant, water very thoroughly and keep an eye on those new plants. They will need extra water.


Monarda didyma, the red species, doesn’t do as well in my garden as the more familiar pink/lavender Monarda fistulosa. This year it’s quite lovely, and both are excellent pollinator plants.

it’s too late to fertilize your lawn or to reseed bare patches, no matter what your lawn-care service tells you. Here’s a suggestion: don’t feed at all this year. The lawn will look just fine. Or wait until around Labor Day and use one application of a slow-release organic fertilizer. Avoid pesticides, fungicides, and herbicides. Pesticides kill butterfly and firefly larvae and native ground-dwelling bees as well as “bad” insects. And garden chemicals are not so great for kids or pets either; common herbicides, in addition to killing butterfly host plants like violets, are carcinogens. Best to avoid them.

— it’s also a bad time to prune woody plants. The plants are using so much energy growing, flowering, and fruiting that they have little to spare to healing a wound. There will be short window of time later in the summer. Of course, continue to prune diseased or injured plants at any time and to remove any safety hazards, such as overeager shrub that block sidewalks or diseased trees that might fall down.

Enjoy the garden and the fireflies!


A view of one of the pernnial beds taken this morning.




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