“All my cabbage family plants…example broccoli, cabbage…etc. get worms on them and they eat them up. What is the best pesticide to use? I even cover them with netting and they still get wormy.” Question from Chris of Orange, Connecticut
Answer: White cabbage moths, also called cabbage loopers/worms, are the most common pest (click here to learn how to manage them) of crops in the […]
Move potted plants to cooler locations during the most dangerous periods of a heatwave.
“It has been hotter than it’s ever been on record. How can I protect my plants from the severe heat?” Angie of Walla Walla, Washington
Answer: It’s scary when you live in an area that typically has mild summer temperatures, and you unexpectedly experience super high heat. Your tender plants are as used […]
“Do you have any recommendations for mail-order succulents supply sources for gardens?” Bob from New Mexico
Answer: There are several mail-order companies that I turn to for succulents for the garden. These include the following companies.
Good Online Succulent Nurseries
Mountain Crest Gardens – They have both tender and hardy succulents for sale.
Cold Hardy Cactus – The Cactus Man specializes in hardy cacti and succulents, and he […]
“I read that Thyme can repel deer from your veggie garden. Is it true?” Question from Sylvia of Belle Plaine, Minnesota
Answer: Thyme is a mint, and on the whole, deer dislike the strong smell of many plants in the mint family (Lamiaceae), so mints, like thyme, can repel deer. But, I cannot say whether repellent mints would keep deer away from vegetables that they […]
“I have phlox growing in a big container. The bottom leaves are looking mottled/veiny. I have fed them and also added iron, but it doesn’t seem to be improving. Is there something else it needs?” Shawn from Kenosha, Wisconsin
Answer: Tall phlox (Phlox paniculata) varieties are prone to a series of diseases and foliage disorders, but yours sounds like it is physiological leaf blight of […]
“My succulent house plants have dry leaves in the middle of the stem and black spots. Why is this happening?” Question from Karina of Wenatchee, Washington
Answer: Succulent plants can develop dry leaves when they are being either overwatered or underwatered. The black spots and the fact that leaves are drying and dying in the center of the stem indicates stem and root rot, which […]
“How and when do you pinch dahlias to encourage fuller growth?” Question from April of Dresden, Tennessee
Answer: Once your dahlias are close to their final height (which depends on the variety) and have ample foliage, you can pinch or trim them back to encourage fuller growth, more branching, and […]
“I have a St.Theresa grapevine that has grown and produced very well. After being devastated by Japanese beetles last year, it developed several distorted leaves. Is it possible the Japanese beetles gave it some virus or disease? I cut it way back. Now, this spring, it has been making a comeback. But I noticed yesterday that some of the leaves at the ends of […]
“I have been given a rain barrel, but don’t have gutters on my house. How can I gather rain in my rain barrel without gutters? Thank you.” Jenifer of Saint Petersburg, Florida
Answer: That is a tough one. Rain barrels are made to collect water from the large surface area of a roof. Gutter downspouts have always been the water delivery system for rain barrels. […]
“My peonies are more luxurious than ever this year. However, after the 1st rain, they tend to fall over. I have each bush encased in an upside-down tomato cage, but they still tend to droop, as the flowers are so heavy. Any suggestions to make this stop from happening every year and any ideas on how to make the glorious blossoms last longer? Many […]
While we have made every effort to ensure the information on this website is reliable, Sun Gro Horticulture is not responsible for any errors or omissions, or for the results obtained from the use of this information. All information in this site is provided “as is”, with no guarantee of completeness, accuracy, timeliness or of the results obtained from the use of this information.