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Gardening

Composting and PFRP make them safe for your garden

Readers continue to write with concerns about composted biosolids and Bloom. To calm your concerns, I’ll lead you through the processes that make fully treated biosolids safe to use in your food garden.

Vertical mulch with Bloom

A mature tree not only increases the value of your home but also offers shade during these hot days of summer, thus reducing the cost of air-conditioning. Trees also provide branches for hanging swings and places for birds to nest and perch.     However, your surrounding lawn does not provide the best conditions for keeping mature shade trees healthy. Soil compaction is often a problem, as foot traffic, riding mowers and often other vehicles compact the soil surrounding the roots.

Don’t over-handle your onions

Onions are bulbing. Disturbing the plants now will reduce the storage life of the bulbs. Keeping your onion patch free of weeds is important, but from now until harvest you’ll want to weed by hand. An onion hoe may damage bulbs.

Even with compost you can overdo it

Recently a Bay Weekly reader complained she could not grow cauliflower or broccoli. The plants grew big and lush but never produced edible heads — all this despite the large amount of compost she added to her garden soil each year.

Biosolids are safe for food ­production; here’s why

Since I became involved in composting biosolids in the early 1970s, technology for processing wastewater has undergone major changes. Back then, most wastewater treatment facilities had only primary or secondary treatment technology. At the same time, industries were dumping all kinds of waste into sewer systems.

Once a year, Hammond Harwood House opens the gates to the ­capital city’s private gardens — and invites you to look inside
 

They are there, hiding behind impossibly small doors tucked into the crowded summer streets of Annapolis. Or perhaps they appear as unexpected splashes of color coyly winking at strollers past a secluded courtyard.

Break the rules and root vegetables won’t grow

A Bay Weekly reader complained that most of the carrots, radishes, turnips and salsify he harvested from last year’s garden had branched roots. My immediate diagnosis was that he must have added a lot of compost to the soil before planting. When root crops are planted in soil rich in freshly applied compost, they tend to produce branched and fibrous roots.

Death by herbicide is the first step toward no-till farming

This spring, Chesapeake Country meadows turned from green to the color of straw. It’s been a strange sight and one you’ll see more of in coming years. No, it’s not a symptom of climate change. It’s a step in no-till farming.     No-till farming offers many advantages over conventional farming.

Feed new plants or warm the soil

Like air, soil is slowly warming. When soil temperatures are below 60 degrees, soil microorganisms are rather inactive and plants have fewer nutrients to absorb. As the soils warm, the microorganisms become active and more nutrients become available.

Silt does not happen by itself

Farmers, homeowners and contractors are all responsible for making silt that clogs our streams, rivers and lakes and pollutes the Bay. Farmers who after harvesting their crops allow the soils to be fully exposed to the weather all fall, winter and spring are guilty. Homeowners who wash down their driveways and sidewalks in place of sweeping them are guilty. Contractors who bulldoze the earth to clear land for roads, homes, shopping centers and more are also guilty.