The last average killing freeze date falls on the third week of March. So
this month is the real launch date for a lot of gardening and landscape
activities for the year. For the first few weeks, gardeners should finish
up February’s chores:
1. Cut back roses and shape your shrub roses. Those tall bushes can be
trimmed to 1 ½ to 2 feet in height with open centers. . Climbing roses
should be left unpruned until after their spring bloom. March is also a
good time to add roses to the landscape.
2. Care for fruit trees. There is still plenty of time to spray wintering
insects with dormant oil. Pruning to open up the centers will help to
reduce disease problems with better air flow. Added sunlight will help
to ripen and color the fruit.
3. Tend vegetable garden. The first half of the month is the right time
to plant potatoes, asparagus crowns, broccoli, cabbage, cauliflower, Brussels
sprouts, mustard and collard greens, carrots, radishes, Swiss chard, lettuce.
4. Care for lawn. Before those summer (long day) weeds begin to
grow, cover the lawn with organic, pre-emergent corn gluten. Early
March is a great time to cut the lawn close and aerate if the soil has
become compacted. A quarter to half inch top dressing of manure-based
compost like Dillo Dirt will go a long way to revitalize turf grass by
adding nutrients, microbes, and beneficial bacteria. If the soil below the
turf grass is poor, aeration and Dillo Dirt will work wonders. As a top
dressing, Dillo Dirt mixed with some sand can help to level the low places.
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As we now approach the second half of the month, after the last average
frost date is behind us, we can shift to warm season gardening:
5. Fertilize turf grass. This will begin to grow as the ground warms up.
An organic lawn fertilizer with a 3 -1- 2 ratio can be applied to the lawn
at the rate of 10 to 15 pounds per 1,000 square feet. Be sure to water the
lawn fertilizer in thoroughly after applying.
6. Insect control. With new growth from all our trees, flowers, and
shrubs… come the insects. Aphids will show up on just about everything.
A safe, organic spray, like All Seasons Oil will keep them at bay without
harming the environment or poisoning ourselves. Our oak trees will be
shedding their leaves and putting on new growth any week. With this
change come the oak leaf rollers and forest tent caterpillars. Sprays with
organic B.T. should be an effective and safe way to control these damaging
insects. Look for products such as Thuricide or Dipel.
7. Planting vegetables. The vegetable garden for the latter half of the
month will see an explosion of activity. It’s finally time to plant tomatoes,
peppers, snap beans, limas, corn, cantaloupes, cucumbers, eggplant, squash.
8. Flower garden. The winter flower garden should be in full force. Those
snapdragons you planted back in October should be starting their second
(and best) bloom. Flowering cabbage and kale should be at their peak. New
annuals to set out are alyssum, dianthus,lobelia, phlox, geranium, gerbera daisy,
petunias, marigolds, zinnias, and nasturtiums.
9. Perennial care. Keep an eye out for those returning perennials; don’t
mistake them for weeds and pull them up. Better to surround them with fresh
compost and a little mulch. This spring will bring a world of new perennials
to plant. Many will be natives that will thrive in our climate with minimal
care and minimal water. Some to look for are ox-eye daisy, black-foot daisy,
skullcap, rudbeckia and gloriosa daisies. There will be tons of salvia and lantana
varieties to choose from.
10. Have fun! Above all, get outside and enjoy yourself. Nothing can be more
rewarding than eating homegrown vegetables and enjoying your own beautiful
landscape. Happy spring gardening everyone!