Q. Was wondering if you can identify this volunteer flowering plant. This is the second year it has come up. – H.G., Shipshewana, Ind. A. This is the perennial garden flower known commonly as hibiscus or rose mallow, botanical name Hibiscus moscheutos. This type of hibiscus is a hardy perennial that dies back to the ground each winter, and returns in the spring, reaching 3 to 5 feet tall or more. They usually begin blooming in midsummer and […]
Q. I have noticed lately that our three big, lovely larches are losing needles on their bottom half. The needles have a banded pattern of color, and I fear larch needle blight. How can I confirm or reject this hypothesis? Is there anything we can do to treat them? – JC A. Specific diagnosis will require more than just these photos. I recommend sending samples of your trees to the Purdue Plant and Pest Diagnostic […]
Q. I was wondering if you had any solutions for tomato rot. I throw my grass clippings on the soil to keep the weeds out. Does that have anything to do with it? – RM, Tinley Park, Illinois. A. Blossom-end rot is a common problem of tomatoes; it’s named for the black, leathery scar that develops on the blossom end of the fruit opposite the point of stem attachment. The black scar tissue is caused […]