Spring gardening calendar

These activities can be done on any day of the week — By Ellen Wells, Globe Correspondent

May 18 - 24

Suppress weeds in your garden with a 3-inch layer of mulch. (Aram Boghosian/Globe Staff) Suppress weeds in your garden with a 3-inch layer of mulch.
Monday

18

During May, water annuals twice a week. Use liquid fertilizer every other week.
Tuesday

19

Overseed with grass seed to create a thicker lawn and fill in bare spots. Leave grass clippings to return nutrients to the soil.
Wednesday

20

DO NOT cut leaves of spring bulbs. They need them to feed and strengthen the bulb!
Thursday

21

Read directions of synthetic and natural weed and pest controls for best results.
Friday

22

Outfit your patio and deck with colorful mixed containers and hanging baskets.
Saturday

23

Suppress weeds in flower beds and the veggie garden with a 3-in. layer of mulch.
Sunday

24

Sow seeds of bush, lima, and pole beans, sweet corn, cukes, squash, melons, carrots, chard, zinnias. Transplant eggplant, tomatoes, peppers, lettuce, sweet potatoes, squash, pumpkins.
These guidelines are all dependent on Mother Nature, of course, and your location. For the Boston area, Zone 6 hardiness puts the last frost date around May 1. For Zone 5, add a week; Zone 4, add two. But that doesn't mean cold nights are gone for good. Keep a careful eye on your local weather forecast to watch for unseasonably cold temperatures. Find your USDA Hardiness Zone at www.garden.org/zipzone.

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