Master Gardener – Answers

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Plant ID: Common Blue Violet (Viola sororia)
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Date Posted: Mon, Jun 09 - 7:29 pm
- Is this plant A weed Invasive
- Thank you for reaching out to the Richmond Master Gardeners! Based on the photo you shared, the plant appears to be Common Blue Violet (Viola sororia). While some gardeners consider it a weed due to its ability to spread vigorously, it is actually native to the eastern United States, including Virginia. Its spreading habit can be a challenge if you're aiming for a more controlled or manicured landscape. However, it also offers ecological benefits: it's a host plant for fritillary butterfly larvae, supports pollinators, and provides low-growing ground cover, especially in shady or naturalized areas.
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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 Consultation
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Date Posted: Tue, Jun 03 - 11:24 am
- Hello, I stopped by the Master Gardener Help Desk last week and Pam told me that you all do yard consultations. I wondered if we could get one for our yard in the next couple of weeks. Please let me know. Best, Ellen
- Yes! We do have a group of master gardeners that offer home consultations. I will follow up with an email to get a few more details and then send your request to our group to try to get you connected with a volunteer.
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Becoming a City of Richmond Master Gardener
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Date Posted: Tue, Jun 03 - 11:20 am
- I'm interested in becoming a master gardener in Richmond, but haven't had much luck finding the resources to become one within city limits. Any help would be much appreciated. Thank you!
- Hi Amber! We're excited to hear about your interest in becoming a Master Gardener in the City of Richmond. The city has been without an extension agent since 2021. Our group of Master Gardeners has been continuing on without that leadership, but has been unable to host classes for new master gardeners. Recently, we have gotten connected with Chesterfield and Henrico and now have opportunities to have new members go through their classes and still join the City of Richmond!! This has been a very excited opportunity for us. We will be opening applications for the program in September. I will send you an email, please e-mail me back to get on the wait list for more information as soon as it is available.
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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!
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Home Consultations
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Date Posted: Thu, May 22 - 10:28 pm
- Hello, I'd be interested in having someone come out and advise us on our garden at our house. Is that possible?
- Hi Debbie! We do have some master gardeners who offer home consultations. In order to see if we can get you connected with one, we will need to get a little more information from you. I will send you a follow up e-mail to connect. Thanks!
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Becoming a Master Gardener
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Date Posted: Wed, May 21 - 12:32 am
- Hello, I would like to become a master gardener. How do I register for the program and classes?
- We're so excited that you are interested in joining the Master Gardener Program. We anticipate applications for the next program opening September 1 of this year and the program running January - March 2026. Requirements for Master Gardener interns: Complete 20 educational hours and 50 volunteer hours Classes are typically on Tuesday mornings (virtually & recorded) and Thursday evenings (in person) You have the calendar year to complete your 50 volunteer hours A fee of $225 is required to participate and covers the cost of all educational materials Ongoing requirement for Master Gardeners: Complete 8 educational hours and 20 volunteer hours per year The Richmond Master Gardeners are a small, but fun unit! We have not had an extension agent since 2021 and operate mostly independently but have relationships with surrounding counties like Chesterfield and Henrico. We typically meet every other month on the first Monday of the month at 6pm at the West End Branch library and will often have speakers come to our meetings. Currently, our volunteer efforts are primarily focused at the Richmond Public Libraries and Richmond Public Schools. If you would like to be on the list to be notified when the application information is available, please send an email to rvamastergardeners@gmail.com. You an also send any questions that you have about the process. We hope to hear from you!
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Becoming a Master Gardener
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Date Posted: Thu, May 15 - 8:53 pm
- I'd like to sign up to take the Master Gardener classes. Can you tell me who to contact to get on the registration list? Thank you! Best, Marie
- Hi Marie! We are very excited to hear about your interest in becoming a Master Gardener! I will follow up with an email so that we can get you on the list when application information is available.
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Pruning a dwarf apricot tree
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Date Posted: Thu, May 08 - 11:20 pm
- We have a dwarf apricot tree in our backyard near our privacy fence (designated by purple arrow in photo). Unfortunately, one of the medium size limbs at the top has stretched over our privacy fence into our neighbor’s yard. I want to but the limb but I’m nervous about damaging the tree since it’s spring time. Would it be okay to cut it at this time of year?
- Thanks for your question about pruning your dwarf apricot tree. It’s totally understandable to want to manage the limb growing into your neighbor’s yard, and you’re right to think carefully about timing. While late winter or early spring (before bud break) is generally the best time to prune apricot trees, light or selective pruning—even now in late spring—is okay, especially if it’s necessary to maintain boundaries or reduce potential damage. Just keep a few tips in mind to minimize stress on the tree: -Use clean, sharp tools to make a clean cut just outside the branch collar (the slightly swollen area where the limb connects to the trunk or larger branch). -Avoid removing more than 10–15% of the tree’s total canopy during the growing season. -Try to prune on a dry day to reduce the risk of fungal infections entering the fresh cut. If you only need to remove one medium-sized limb, your apricot tree should tolerate it well—especially if it's otherwise healthy. Make sure to monitor the tree through the season for any signs of stress (like leaf drop or dieback) and water consistently during dry spells.
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Rhododendron Questions
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Date Posted: Thu, May 08 - 11:14 pm
- I have an established rhododendron and a couple of questions 1. Some leaves tern yellow and die and fall off 2. Others show yellowing but remain 3. New shoots form at the base but die never to mature 4 is there any way to encourage new growth on the old branches
- Thanks for reaching out with your rhododendron questions! You’ve made some great observations, and your plant is definitely trying to tell you something. Here are a few possible explanations and tips based on what you described: Yellowing and Leaf Drop: Some yellowing and leaf drop is normal, especially for older inner leaves. However, widespread or early-season yellowing in Richmond can also point to stress from heat or underlying root issues, particularly since rhododendrons are naturally cool-climate, understory plants. Our warm springs and hot summers can make them more susceptible to systemic diseases or environmental stress. Persistent Yellow Leaves: This could be a sign of sun stress—rhododendrons prefer morning sun with dappled afternoon shade. Too much direct, hot afternoon sun can cause the kind of yellowing you're seeing. Poor drainage or soil that’s too alkaline can also cause nutrient uptake issues, leading to chlorosis (leaf yellowing). New Shoots Dying Back: When new shoots at the base fail to mature, it often points to root zone stress, such as poor drainage, fungal root diseases, or heat stress. Check that mulch isn't piled too high against the base and that the soil is staying moist but not soggy. Encouraging New Growth on Old Branches: Yes! Light pruning in early spring, just after flowering, can stimulate new growth. Avoid heavy pruning all at once; instead, gradually thin out leggy or unproductive branches over time. Make cuts just above a healthy bud or leaf whorl to encourage branching. Good luck with your rhododendron!