
Long Island Horticultural Society
What's Going on in the Garden
























September To Do List
Planting
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Sow fall vegetables: Plant cool-loving greens like lettuce, spinach, kale, radishes, and Swiss chard.
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Spring Bulbs Shop early for daffodils, crocuses, and hyacinths to plant as the soil cools.
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Add perennials and trees: Warm soil helps new roots grow fast before winter dormancy
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Maintenance and Cleanup
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Divide overcrowded plants: Dig up and split mature perennials like hostas and daylilies.
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Bring in houseplants: Move summer-vacationing indoor plants back inside before night temperatures drop too low.
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Prepare Summer Bulbs for storage over winter
Winterize your lawn
Once autumn's nip hits the nighttime air, it's time to winterize your lawn. You might not see the full results of your winter lawn care until the spring, but these cold-weather steps lead to a healthier, greener, lusher lawn once the weather warms up again.
Every lawn benefits from a feeding of winter fertilizer made for grass, but this step is especially important if your lawn consists of cool-season grasses, which include fescue, bluegrass, and perennial rye grass. Because these turf varieties reach their prime in the cooler fall weather, they benefit the most from a good meal of winter fertilizer.
Winter lawn fertilizer is heavy on potassium, which strengthens the roots and helps the grass survive cold weather. A good winter lawn treatment keeps your turf strong and green through the fall, and ready to perk up again once spring arrives.
Aerating your grass lets water and nutrients reach the roots quickly and easily, and prevents the soil from becoming too hard and compacted. You can aerate a small lawn with aerating "shoes" or a manual push aerator.
Over-seeding is helpful for cool-season lawns as well, because once those grass seeds germinate in the spring, they will crowd out competing weed seeds. Do your cool-season overseeding in the early to late fall.
Turn off the sprinkler system by the end of October, and flush out the hose and sprinkler system to prevent freeze damage.
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Make a Berry Beautiful Contanier to enjoy fall through Winter. Gather stems of Berries from Beautyberry, Winter Berry, Viburniums ect. Collect colorful twigs from red-twig and yellow twig dogwoods, orange Willow, white birch ect. mix with other dried perennials & ornamental grasses. Place in a large container filled with sand. Add some twinkling lights and enjoy day and night.
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