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June Gardening: A Quick Guide
Boston, USASunday, June 1, 2025
Annuals are a great way to add color to your garden. Anything you find in the garden store is safe to plant outside. Newer varieties of impatiens are more disease-resistant, so give them a try. Marigolds, geraniums, and petunias are garden staples. But don't forget about bacopa, scaevola, verbena, and tropical salvia. They're fantastic in containers or directly in the ground.
Tropical salvia is a hummingbird magnet. But remember, they're not frost hardy. So, enjoy them while they last. Add some interesting foliage plants like canna, begonias, or coleus for a look that lasts until frost.
Geraniums are a warm-weather favorite. They bloom all summer long. If you have some sun, try nasturtiums in a hanging basket. They're edible and look great in a summer salad.
Moving plants is risky this time of year. But if you must, do it carefully. Dig the plant out, water it heavily, move it to its new home, and cover it with shade cloth. Mist it a couple of times a day and keep the soil moist for the best chance of success. But it's better to wait until late August or September.
Iris bloom in late May and early June. They're beautiful, but their blooms don't last long. As we move through June, keep your garden weeded. A 2- to 3-inch layer of leaf mulch will help keep the ground from drying out. But don't pile mulch too high around trees. You want to see the flare at the base.
If you have a lawn, it needs about an inch of water a week. Watering between 4 p. m. and 8 a. m. is best. This allows the grass to dry out during the day, reducing the risk of disease.
June has long days, perfect for outdoor activities. But remember, daylight is shrinking, so make the most of it.
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