- Start seeds of onions and leeks at the beginning of the month.
- Near the end of the month, start seeds of broccoli, cabbage, cauliflower, and brussels sprouts indoors under lights. Use the planting instructions on the seed packets.
- Bring geraniums out of storage, cut them back by half, water well, and set them in a bright, cool window.
- Start slow-growing flowers, such as garden verbena, stocks, wallflowers, and ageratum.
- For early tomatoes start seeds under lights now to be set out in April and protected with wall of water.
- Rinse houseplants under your shower or place in a tub and use a sprinkling can.
- Force branches of flowering shrubs near months end. Take cuttings of forsythia, spirea, pussy willow, and Japanese quince.
- Take cuttings of houseplants for summer containers. Consider ferns, begonias, philodendron, spider plant, or Sansevieria (snake plant) which can be incorporated into a shade container.
- Sharpen pruning shears.
- Prune fruit trees, brambles, grapevines, and late summer-blooming shrubs.
- Gather egg masses of the tent caterpillar which should be burned.
- In mild weather, press back into place plants that heaved out with the frost.
- Cover exposed crowns and roots of irises, peonies, rock plants, pansies, and perennials with a non-packing type mulch material.
- Continue to pull winter annual weeds.