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Gardening

On lawn and garden; never in the compost pile

If you’re burning wood, you get ashes. A reader asked if he could dump his ashes in the compost pile. My answer was a resounding no.     Wood ashes are basic in nature and contain high levels of oxides, making them very reactive in raising the pH. Composting systems perform at their best when the feedstocks — those materials that are undergoing decomposition — are slightly acid. So adding wood ashes to an active composting pile will delay and/or stop the composting process.

One-step potting

Larger seeds — such as those of broccoli, cabbage, cauliflower, eggplants, marigolds, peppers, tomatoes and zinnias — can be direct seeded into the containers in which they will grow until they are ready to be transplanted into the garden. This eliminates the shock associated with transplanting. Direct seeding requires more space initially, but these large seeds do not require the tender care essential in germinating small seeds.     They will germinate easily providing you keep the rooting medium moist but not wet.

Transplanting seedlings

The sooner you can transplant seedlings after they germinate, the better they can survive and continue growing. Delay transplanting your seedlings after they have become crowded and have true leaves, and you’ll get stunting, resulting in slower growth.     The first green leaf-like structures you see on seedlings are called cotyledons. The cotyledons contain all the energy necessary for germination and the development of the first true leaves. To minimize transplant shock, transplant seedlings soon after the first true leaves appear.

Sow slow-germinating seeds now

As you know from last week’s calendar of when to sow what, now into early March is the time to sow seeds of onions and shallots, begonias and coleus, petunias and impatients. These very fine-seeded species require special treatment. Here’s what to do.     Buy a commercial seed starter that’s a sterile fine mixture of peat moss, pine bark and fine vermiculite amended with limestone to adjust the pH to near 6.5.

Here’s what to sow when

It’s time to start on your garden.         Sow slow-germinating small seeds inside in late February through March. These include begonia, celery, impatient, petunia, snapdragon, etc. These small seed plants are not only slow to germinate but slow to grow.

That means you forgot to feed them

Are your azalea leaves yellowing and dropping? The loss is more than winter’s toll. You could have prevented it if you had mulched your azaleas with one or two inches of compost in early to mid-September or applied one-quarter cup of an ammonium-based fertilizer soon after the first frost.

Give plants the right lights, and they’ll grow in any season

Plants don’t like freezing temperatures any more than we do. But many will be perfectly happy to grow indoors, encouraged by fluorescent lights.     Under lights, you can grow plants, including vegetables, up to 10 inches tall.

Propagate a jungle of African violets using my foolproof method

Beyond their good looks and winter bloom, African violets have another charm. They’re so easy to propagate in the home that they raise your self-esteem. Here’s my foolproof method:

But learn their tastes, and they’ll give you flowers

Are your African violets blooming?         If not, read on to learn why and what you can do to bring out the flowers.     African violets’ long-standing popularity grows from lush foliage and their habit of winter flowering. The plants are challenging, but not more than many in-home gardeners can manage. Even propagation is possible with a little knowledge on your part.

Get out and dig to be ready for spring

If you did a good job of building your compost pile last fall, now is a good time to stimulate more microbial activity.     Just before Christmas, temperatures in my compost pile dropped below 100 degrees from a high of 130 degrees measured just three weeks earlier. This falling temperature is due partially to a drop in surrounding ambient air and partially to a lower rate of microbial activity.