Soils and Composting

Is it safe to make raised beds out of old galvanized metal roofing?

Question: I am thinking of making some raised beds out of some old (60+ at least!) galvanized metal roofing we took off our cape in the 80’s.  Should I worry about lead or cadmium leaching into my organic garden soil? Answer: Lynne M. Holland, Horticulture and Social Media Professional Since the panels you plan to […]

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How to lower nutrients in the soil to optimum levels?

Question: I have eight raised beds (8′ by 4′) and all have above optimum levels for phosphorus (79.1), calcium (79.3), boron (1.5), manganese (11) and zinc (98) according to my last soil test. What I want to know is how to lower these nutrients and micronutrients to optimum levels? Answer: Caragh B. Fitzgerald, Associate Extension […]

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What kind of garden can be planted over a septic field?

Question: I am a Master Gardener in Virginia, but I’m helping a friend start to think about her garden for a new house she is building in Maine. Only the garage has been completed this year, with the main house to follow next year. Her driveway wraps around a center section, which is also her […]

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Where can I find land to start a lavender farm?

Question: I live in Yarmouth, Maine and am looking for land to start a lavender farm. I am starting small, maybe one acre to see how it will go. My limitations would be: zone, 6a, 5b or5a, not very rich, sandy soil, well drained, around one hour drive from Yarmouth. Could you advise where I […]

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Can my saucer magnolia tree be saved?

Question: I purchased a saucer magnolia tree and planted it in early May. At the time of planting there were no leaves or flowers visible but it did have buds. I planted using a blend of 50% original soil which is clay and Coast of Maine penobscot compost blend. The tree started leafing out soon […]

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What’s wrong with my Japanese maple tree?

Question: In a 24 to 48 hour period, some of the leaves on my Japanese maple tree developed dry, brown patches. Leaves that fell to the ground were completely dried-up and crunchy. About 10% of the leaves on the tee were affected. The condition has not worsened since I first noticed the problem a couple […]

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What’s wrong with my rhododendron?

Question: I have a large rhododendron that has developed a problem. I believe it has a nutrient deficiency but I don’t know what it is. I had a soil test done on 04/16/2021 (2029) that indicates I need to reduce the pH a half a point. What do you think is the problem? Answer: Rebecca […]

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What is the best type of soil to use in my raised bed gardens?

Question: I am starting some raised beds this year. What is the best type of soil to use? I use Coast of Maine for starting my plants. Answer:  Caragh Fitzgerald, Associate Extension Professor, Agriculture When you’re filling a raised bed, the primary material should be mineral soil, rather than a potting soil. Mineral soil is […]

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