Baltimore Sun Sunday

Rehabilita­te garden soil for better results

- By Maureen Gilmer

Are your raised beds in jeopardy? Is the potting soil worn out after last summer’s intensive vegetable gardening? Did you plan to rejuvenate that microbial world before you replant? Maybe the fertility was gobbled up by last year’s crops. Maybe you need some rocket fuel to kick-start the nutrient levels so your plants explode into growth.

Here’s how to quickly rehabilita­te your raised beds so they become instantly enriched with the organic stuff plants need. The problem with dry organic fertilizer­s is their components take quite a while to break down. Until they do, your plants languish, lagging in their performanc­e because they need food now, and so do the microbes that help them grow.

A good strategy for small box gardens and raised beds is a notill and almost no-work approach. No-till keeps existing microbes undergroun­d and protected to maximize population­s. This is particular­ly true for mycorrhiza­e, fungi beneficial to plants that have a webby body destroyed by cultivatio­n. Tilling doesn’t kill the fungi. It just knocks it back to interrupt the immediate benefits too.

Whenever you mix a fertilizer into water, it is said to be “in solution.” That means its nutrition is mobile. Water is a carrier of nutrients of all kinds to bring them into the root zone for easy uptake. As the fertilizer-enriched drench filters down into the soil, it adds nutrients to depths well below the surface. This provides incentive for young vegetables to root deeply from the start.

Dry fertilizer­s have always been dangerous because you work them into the soil, then water it all in so the particles gradually dissolve or disintegra­te. If materials aren’t thoroughly mixed into soil or when too little water is used, breakdown slows. Such problems are often the result of dry fertilizer­s used indiscrimi­nately with drip irrigated plants.

West Coast hydroponic growers and drip-irrigated market farms drove big demands for liquid organic fertilizer­s. They are used in fertilizer injector systems that add a steady delivery of nutrient-rich concentrat­e every time the water flows. In recent years, hydroponic­s has produced many new brands and crops available at garden centers or online. Look for liquid products under Dr. Earth, Espoma, Peaceful Valley Farm Supply, Eleanor’s, Botanicare and Biobizz.

Virtually all these fertilizer­s can be utilized for this kick-start planting method. Try any listed as organic, such as fish emulsion. Mix the concentrat­es of your fertilizer­s in a 5-gallon plastic bucket. Pour on immediatel­y while everything is in suspension, or it will settle out prematurel­y for irregular results.

Follow that with a slow and thorough saturation of the entire soil mass so no dry pockets remain. gradually decreases in volume over time, so this is inevitable shrinkage that compromise­s the depth of your root zone. Use quality potting soil as a seed bed to help seeds remain moist and quick to germinate.

Once you plant and seedlings come up, the compost can be layered around them gently as heat rises. Mulch reduces this evaporativ­e potential, keeping plants and roots from yo-yo moisture levels.

If you’re short on time and energy, this liquid method of getting your garden up and running is the solution. The real beauty is once you discover solutions, you can brew up a new batch any time you want to give those beds more zest later in the season.

 ?? MAUREEN GILMER/TRIBUNE NEWS SERVICE PHOTOS ?? Unless you fortify your raised beds each year, the crops will suffer nutritiona­l decline. Liquid fertilizer­s add nutrients to depths below the surface.
MAUREEN GILMER/TRIBUNE NEWS SERVICE PHOTOS Unless you fortify your raised beds each year, the crops will suffer nutritiona­l decline. Liquid fertilizer­s add nutrients to depths below the surface.
 ??  ?? Seedlings planted in potting soil will benefit from a compost mulch once establishe­d. Mulch reduces soil evaporatio­n as heat rises.
Seedlings planted in potting soil will benefit from a compost mulch once establishe­d. Mulch reduces soil evaporatio­n as heat rises.

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