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Native Plants - best time to transplant
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Date Posted: Wed, Sep 10 - 8:08 pm
- Hello! I have several native plants and two small elderberries that I need to transplant to different spots in my yard. Is there an ideal time to do this? I heard something about "fall" being a good time, but not sure when exactly that means? Thank you!
- Good afternoon! Thank you for your question. What you have heard is exactly correct - Fall is the best time to transplant your natives, as well as your two elderberries. I would recommend anytime in October when temperatures are cooler. Be sure and add some amendments to the soil such as a good leaf compost which can be purchased at a local garden center, and water the plants well after transplanting. Thanks for reaching out!
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Declining Rose Bushes
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Date Posted: Wed, Aug 20 - 12:18 am
- We have a row of drift roses out from for the last 8 years, last year once bush died totally after pruning and was replaced but two others appear to have dying branches in places but are blooming in others. Do you have any recommendations? They previously were huge and bloomed all summer.
- Thank you for reaching out about your drift roses. After 8 years, it’s not uncommon to see some decline in vigor, and the symptoms you’re describing (a bush dying after pruning, and others showing partial dieback while still blooming) may have several contributing factors. Possible Causes Age & Natural Decline: Drift roses, while hardy, often start to lose vigor after 7–10 years. Decline in individual plants can be expected over time. Pruning Stress: If roses are pruned too severely or at the wrong time (late fall/early winter), it can stress the plant and increase vulnerability to dieback. Canker or Dieback Disease: Fungal cankers can cause branches to brown and die back while other parts of the shrub continue to bloom. Look for discolored, sunken, or shriveled stems. Root Stress: After many years in the same spot, soil compaction, poor drainage, or root competition from nearby shrubs can weaken roses. Environmental Stress: Last winter’s cold snaps, summer drought, or inconsistent watering can also contribute. Recommendations Inspect the Canes: Cut into affected stems. If the wood inside is brown rather than green/white, prune those branches back to healthy tissue. Sterilize pruners between cuts (70% alcohol or 10% bleach solution). Monitor for Pests/Disease: Check for signs of fungal cankers, crown gall, or borers. Mulch & Soil Health: Refresh mulch to 2–3 inches (but keep away from the crown). Consider lightly amending with compost to improve soil structure and nutrients. Watering Practices: Provide consistent deep watering during dry spells, especially since stressed plants are more susceptible to disease. Rejuvenation Option: If more bushes continue declining, you may want to replace them gradually. Consider rotating in disease-resistant shrub roses or other flowering shrubs to diversify and reduce the chance of future loss. Since one plant has already died and others are showing decline, you may be at the natural replacement stage for part of the row. Healthy roses can last many years, but staggered replacement every few years can keep the planting full and vibrant.
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Why is my swamp milkweed dying?
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Date Posted: Thu, Aug 14 - 11:54 pm
- I have an established butterfly bush and swamp milkweed plant in my yard. They’re both around 3ft tall. This year, both plants began dying fast. We haven’t dumped anything there, nothing changed as far as plants, soil, drainage, etc. with one exception. Three years ago we planted some Blue Mistflower. It never came up until this year. It is climbing the dead butterfly bush. I’ve read Blue Mistflower spreads via rhizomes and that this could potentially be the cause. Any thoughts? Other things I should check? Thanks!
- Thanks for reaching out to the Richmond Master Gardeners! I've connected with one of our gardeners, Pam, that has a wealth of knowledge on native plants to help give you some guidance. There has been a lot of chatter in the Virginia Native Plant Society Facebook group that this has been a banner year for milkweed aphids. Swamp milkweed seems particularly susceptible to this aphid, and you truly have “a” plant (singular), it becomes the sole target for the aphids. The aphids submit a dew that causes a fungus. Unfortunately, the picture doesn’t show the milkweed clearly enough for this to be more than a guess, but we think it’s a reasonable possibility. We wouldn’t blame the blue mist flower. Yes, it’s hardy and loves to spread, but it’s a valuable late-season food source for pollinators. We recommend planting a different companion for it. You did not mention you soil or light conditions, but the Plant RVA Natives guide (download free at vnps.org) will help identify companion plants that can hold their own with an enthusiastic spreader. Pycnanthemum muticum, clustered mountain mint, might be a possibility, and it blooms much earlier, spreading the glory. Since butterfly bush is designated invasive in Virginia, we can’t ethically recommend trying to save it or replacing it with another. But its loss provides an opportunity to plant more natives. If you have additional questions about natives, Pam will be at the West End Branch of the Richmond Public Library on Wednesday afternoons after Labor Day. You are welcome to stop in and chat with her more!
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Garden Support at The Doorways
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Date Posted: Wed, Aug 06 - 2:48 pm
- I am the Volunteer and Outreach Manager for The Doorways, a nonprofit in Richmond that provides lodging for patients and their family members while they receive medical care nearby. We have a lovely garden area that needs some pruning/mulching and new plants for fall. I'm wondering how to connect with volunteer Master Gardner's to see if there's interest. Thank you!
- Thank you so much for reaching out — The Doorways provides such an important service to the Richmond community, and your garden sounds like a lovely and meaningful space for your guests. As Master Gardeners, our primary mission is education. Our volunteer efforts are focused on teaching and sharing best practices related to horticulture and sustainable gardening. While we aren’t a labor-based group, we’d be happy to support your efforts in an educational capacity. If you're interested in learning more about what types of plants could thrive in your garden or how to plan for fall planting, we can connect with our volunteers to see if we have someone available for a consultation. For hands-on help with pruning, mulching, or planting, we would recommend reaching out to a local garden club or professional landscaping service who may be better equipped for that type of volunteer or contracted work. Please e-mail us if you are interested in a planting consultation: rvamastergardeners@gmail.com
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Planting Natives in Yard
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Date Posted: Tue, Jul 22 - 10:05 am
- Hello! I moved into a new home in the past year and my yard is pretty much a blank slate. I love a flower-filled garden, but my yard is almost entirely shade due to an extraordinary, 100+ year old Tulip Poplar. Do you have any suggestions for flowers or colorful plants that would thrive in my shady yard? I am interested in keeping my yard native. Thank you!
- Hello Bethany! How exciting to have a yard that is a blank slate to fill with native plants! One resource I will share with you is https://www.plantvirginianatives.org/plant-rva-natives This guide gives you a wealth of information about native plants and landscaping. I'll also reach out to you via e-mail to see if we can connect with you more to provide more specific recommendations.
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Pruning Oakleaf Hydrangeas
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Date Posted: Fri, Jul 11 - 12:54 am
- I have an oakleaf hydrangea that has grown too large for its spot in my yard here in Richmond. When is the best time to cut it back and should I cut its branches close to the trunk? Can it be encouraged to grow more vertically and not spread out horizontally?
- Thank you for your question about your oakleaf hydrangea (Hydrangea quercifolia)! I frequently walk past the ones Maymont has in their parking lot at the nature center and am always admiring how beautiful they are but they can indeed outgrow their space over time. Timing: The best time to prune oakleaf hydrangeas is shortly after they finish blooming, typically in late June through early August here in Richmond. These shrubs bloom on old wood, meaning they form next year’s flower buds on stems grown the previous year. Pruning in late summer or fall will likely remove those buds and reduce flowering the following year. How to prune: Avoid cutting branches all the way back to the trunk. Instead, remove about 1/3 of the oldest, thickest stems at the base to encourage new growth and improve shape. You can also shorten some of the remaining stems to reduce overall size and guide the shape—just make cuts back to a bud or side branch. Encouraging vertical growth: Oakleaf hydrangeas naturally have a broad, spreading habit. While you can’t dramatically change this growth pattern, you can encourage a more upright form by thinning out wide-angled branches and encouraging vertical shoots, selectively removing outward-growing stems to reduce width, and/or using light staking or support for young vertical stems if needed (though this is more effective in younger plants). If the space is truly too small for the mature size of your shrub, long-term, you might consider relocating it in the fall or early spring when it’s dormant. Good luck and happy gardening!
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Indoor Bamboo
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Date Posted: Thu, Jul 10 - 12:16 am
- My bamboo leaves has brown tips. It is potted inside my home in dirt. It's not in direct sunlight and I water once every other week. I wonder if the tap water had too much fluoride. Please advise.
- Thank you for your question about your indoor bamboo plant! Brown tips on bamboo leaves are a common issue and can result from a few different factors. Based on your description, here are some possibilities to consider: 1. Water Quality (Fluoride or Chlorine) You're right to wonder about your tap water—bamboo can be sensitive to fluoride, chlorine, and other chemicals commonly found in municipal water. Over time, these can build up in the soil and damage the leaf tips. To help with this: Try using distilled water, rainwater, or water that has been left to sit out for 24–48 hours (which allows chlorine to dissipate). You can also occasionally flush the soil with clean, non-fluoridated water to help remove any buildup. 2. Low Humidity Indoor air—especially with heating or AC—can be quite dry. Bamboo prefers higher humidity levels. Mist your plant regularly or place a shallow tray of water and pebbles beneath the pot to increase humidity. Grouping plants together can also raise the local humidity level. 3. Underwatering Watering once every other week may not be enough, depending on your home's temperature, humidity, and the plant's container size. Brown tips can be a sign of inconsistent moisture. Try checking the soil weekly. If the top inch is dry, it's time to water. Bamboo likes consistently moist (but not soggy) soil. 4. Light Levels While bamboo doesn't need direct sunlight, it does need bright, indirect light to thrive. If your plant is in a very low-light spot, consider moving it closer to a window with filtered light. 5. Salt or Fertilizer Buildup Over time, salts from tap water or fertilizer can accumulate in the soil and damage roots. If you've been fertilizing, consider cutting back and flushing the soil with clean water occasionally. Hope these ideas will help you out!
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Bitterness in Cucumbers
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Date Posted: Tue, Jul 01 - 1:28 am
- I'm growing cucumbers for the first time this year, and so far have only harvested a few. They are heirloom straight 8 cucumbers I started from seed. I'm harvesting them at about 6 inches long. I cut the ends off when I slice them to avoid bitterness, but they still seem to taste quite bitter and soapy. I'm not spraying them with anything, and I was them well with water when I harvest them. What might be making them bitter?
- Thanks for reaching out to the Richmond Master Gardeners! Bitterness in cucumbers—especially heirloom varieties like Straight 8—is a fairly common issue, although frustrating, and it’s usually due to the natural compounds called cucurbitacins. A few reasons you might be experiencing bitterness: First off, we have to think about environmental stress, especially given the extreme heat and big down pours we have been having. Cucurbitacin levels tend to rise when the plants are under stress and common stressors for cucumbers include: Inconsistent watering (periods of drought followed by heavy watering), high temperatures, and also poor soil fertility or nutrient imbalance. Straight 8 cucumbers tend to be prone to bitterness, especially in hot and dry conditions. Try to keep soil moisture even by watering regularly (especially during hot spells), and consider using mulch to conserve moisture and keep soil temps steady. There's a chance your cucumbers are sitting on the vine a little too long and getting a little overripe. If you notice any yellowing of the skin or a hard waxy exterior, they are likely getting a little too ripe. You could try harvesting a little sooner, maybe when they are 5 inches, to see if that helps. As you already seem to know, the bitter components are most concentrated at the the stem end, in the skin and just under the skin. In addition to trimming the end of off, you could try peeling the cucumbers. I've also heard of people soaking them in cold salted water for about 40 minutes once they are peeled. I haven't tried this myself, but I've heard it helps to reduce the bitterness. Their are some hybrid varieties that are bred to reduce bitterness. If none of the above ideas help you to reduce bitterness, you could try growing a hybrid variety next time and see if that helps. Good luck! We hope you are able to enjoy your cucumbers!
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Hydrangea Pruning
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Date Posted: Wed, Jun 04 - 1:52 am
- Hello! My hydrangeas need some help. I inherited them with my new to me house in late fall, so this spring was my first opportunity to prune. They were already overgrown from the past owners. For the big leaf hydrangeas: I missed the fall pruning, so these haven't had a haircut since who knows when. The branches are getting weighed down from the weight of the flower and leaves, and the plant is very leggy. Should I try and start selectively and slowly clipping them back now or wait until they're done blooming and do it one big chop? If now, do I cut the old leggy wood back, or just the new green branches that are stemming from the old leggy wood (the two blooms on the top of the left bush are an example)? For the panicle hydrangea in the middle: I cut what I thought was way back this spring, but clearly not enough! Should I be trying to selectively trim some of this back now or bite the bullet and wait until spring and do a big chop? It's so tall and it's only May! Thank you!
- Thanks for reaching out—and congratulations on your new home and garden! It sounds like you’re giving your hydrangeas some thoughtful attention, which they’ll definitely appreciate. The blooms are beautiful! Here’s a breakdown of how to approach pruning both your bigleaf hydrangeas (Hydrangea macrophylla) and your panicle hydrangea (Hydrangea paniculata): Bigleaf Hydrangeas : These bloom on old wood, meaning the flower buds for this summer formed last year. That’s why heavy spring pruning can often result in fewer blooms. Since yours are blooming now, I'd recommend that you hold off on major pruning until after they finish flowering—typically by mid to late summer. Then you can: Remove about 1/3 of the oldest, leggiest stems at the base to encourage new growth from the bottom and lightly shape the plant by shortening stems that look untidy or weighed down. Avoid pruning after August, however, as that risks cutting off next year’s flower buds. In the meantime, if any branches are flopping badly or blocking paths, you can do a light, selective trim now—just avoid heavy cuts that remove flower buds. Panicle Hydrangeas: These bloom on new wood, so you have more flexibility with timing. You’re absolutely right that they can grow quickly in spring! For now, you can lightly thin or shorten a few of the tallest stems to maintain a more manageable shape but avoid cutting more than 1/3 of the plant this time of year. If it’s still too tall for your space, plan for a more significant structural pruning next late winter/early spring, before new growth starts. General Tips: Always cut just above a pair of healthy buds or a leaf node. Use clean, sharp pruners to avoid disease. Consider adding mulch and checking soil drainage if plants look stressed or leggy—bigleaf hydrangeas especially like evenly moist (but not soggy) soil.
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Home Consult for Native Plants
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Date Posted: Tue, May 27 - 1:08 am
- I’m slowly redoing our front and back yards with native plants and would love some planning advice, including as to trees. Thank you!!
- Thank you so much for thinking of the Master Gardeners as you embark on the journey of redoing your yard with native plants! What an exciting venture that will have such a great impact! I will send you a follow up email to get a little more information from you in order to see if we have a volunteer available for a consultation. Please check your email to continue this conversation!