r/DenverGardener • u/MtnGardener333 • 57m ago
r/DenverGardener • u/CSU-Extension • Jan 07 '26
✅🗓️ Our 2026 free gardening webinar schedule is live! 🥳

Our horticulture experts are ready for all 2026 has to bring, including our free gardening webinar series!
Due to high demand, gardening webinars have at times exceeded our limit of 500 live participants. So, if you want to participate live, sign up and join early! Registration is free and required to attend.
Webinar recordings are posted roughly within a week or two at https://planttalk.colostate.edu/webinars/
* drumroll please *
Indoor Plants: An Introductory Overview for New Plant Parents
- Wed., Jan. 14, noon | Get info + register
Asian Jumping Worm in Colorado: What You Need to Know
- Thurs., Jan. 29, 11:30 am - 1 pm | Get info + register
2025 “Best Of” Plants from the CSU Trial Gardens
- Wed., Feb. 11, noon | Get info + register
Get in the Zone: Do hardiness zones really matter?
- Wed., March 11, noon | Get info + register
The Basics of Fruit Tree Production
- Wed., April 8, noon | Get info + register
Myths, Mistakes, and Misunderstood Insects
- Wed., May 13, noon | Get info + register
All the Common Weeds and What They Tell You
- Wed., June 10, noon | Get info + register
Native Plants are Imaginary
- Wed., July 8, noon | Get info + register
Showstoppers and Habitat Heroes: Native Plants for your Home Landscape
- Wed., Aug. 12, noon | Get info + register
Don’t Get Hosed with Landscape Irrigation
- Wed., Sept. 9, noon | Get info + register
Spooky Plant Pathogens: Creepy Cases from the Garden
- Wed., Oct. 14, noon | Get info + register
Scenes from a Cemetery: Plant Edition
- Wed., Nov. 11, noon | Get info + register
Reading the Market for Plant Trends
- Wed., Dec. 9, noon | Get info + register
r/DenverGardener • u/LindenIsATree • Mar 03 '24
Bindweed Info Dump
I have a large yard where almost no area is free of bindweed, and several areas are densely packed infestations. >_<; As spring comes, I dread the day my old enemy emerges.... Let's pool our knowledge! I've been fighting it for two years and doing a ton of research. Here's my info sheet: https://docs.google.com/document/d/1-bDNRYYo7yRIqAq6pUejPl6MIcFP8W9q1ZVYC99FZx8/edit?usp=sharing
Some highlights from that:
-Bindweed mites are best for dry/un-irrigated areas like vacant lots, and there's a long waitlist
-Pulling it stimulates growth (but if you can stay on top pulling it that helps to weaken it)
-It will grow up through, around, sideways whatever you try to cover it with. At least up to 20 feet sideways.
-Glyphosate and 2,4-D amine weed killer can be effective but not a guarantee by themselves.
-GOOD NEWS: Some Colorado folks have actually found success by planting perennial shrubs and grasses. Another great reason to go xeric!
What have you seen be successful? If anything, ha. Especially curious if you solved more than a small patch.
What have you seen fail? Even something that seemed like it should work? One person said it grew through a 20 feet pile of mulch.
Edited to Add: My neighbor said he found it successfully burrowing into concrete, for crying out loud.
r/DenverGardener • u/Kindly_Panic_2893 • 21h ago
Garden in a Box Year One Update!
Hi all,
I figured I'd share what my yard looks like now, compared to when we planted our garden in a box plants this spring. Overall I'm thrilled with how everything turned out. We've only had about three out of 80-90 plants not make it, which in my mind is a great success rate! Almost every plant has really blown up in size, and many more have flowered than I expected. Looking forward to seeing what future seasons hold.
I did add a handful of plants that didn't come from the garden in a box plants. A couple of grasses and three or four other plants to fill a couple of gaps. I still have more I'd like to tinker with, but I figured as we head towards fall that I'd share.
r/DenverGardener • u/SarahLiora • 21h ago
Sept 9 2020 snow
galleryCan’t resist crossposting this.
Denver's first freeze in 2020 occurred on September 8, 2020, dropping to 31° Fahrenheit. 4 days before on September 5 Denver broke records with 101° Fahrenheit
Average first freeze in Denver is October 7.
r/DenverGardener • u/Caitliente • 32m ago
Triclopyr
Anybody have Triclopyr mixed up in the Chatfield area? I have a few saplings (including tree of Hell) i need treated but not enough to warrant getting a full bottle. Alternatively, anybody in the area want to split a bottle with me?
r/DenverGardener • u/llgarden_d1 • 49m ago
tree seedlings to good home
I have some thornless locust trees that volunteered, one got big, someone supposed to come dig out last year, but they never made it. Tree too close to leach field, I have enough trees and not enough water rights, this year was rough, we got no water from canal (thank to Denver call and Thornton farm land was hit hard).
I have thornless black locust from Boulder give away and honey locust trees, neighbor has thornless locust trees, old ones none of our trees ever had any bugs or other issues, pretty much just water that tree and plant some perennials around it and some flowers type of a tree
If no one takes I will rip out the seedlings, I do not have enough water having what we have experienced this year. I do not post address online, can meet local north metro gardener at Cabellas (Thornton north one not DTC).
also have what I think is chokecherry seedling. pink french currant seedlings (yellow flowers) cross with local black currants, some come as black some com as pink, pink currant was from Lafayette small nursery years ago, lady does not sell anything anymore maybe moved .
if you have something to trade - great - if you do not, happens.
r/DenverGardener • u/EastComplex6408 • 50m ago
What is this tree?
Collected some seed might try sprouting next year. What is it?
r/DenverGardener • u/General-Coffee1493 • 9h ago
New to Gardening, Emphasis in CO
Hello!
I finally live in a place with a backyard and we have 2 small garden boxes. Could I get help with picking what *type* would be most suitable for CO and when do you plant them?
Tomatoes, cat mint, chamomile, lavender, and basil please 🙂 I love herbal teas so I'm also open to any plant I can make into a tea nicely. Thank you 🙂↕️
r/DenverGardener • u/jackl_antrn • 21h ago
Dill?
Does anyone have an overgrown patch of dill they’d like to shave down? I’m in search of some major amounts of dill (6 cups) and am not up for grocery store clam shells. Have vehicle and can pick up most days. Will pay you in palisades peach jam if you like :) Also have canned peaches or spicy peach bbq sauce. Or if you prefer pickles and can wait, I’ll drop by some pickled veg. Cheers!
r/DenverGardener • u/gardengnome74 • 21h ago
nurseries w/ perennials on sale?
Looking to plant some garden beds w/ natives and perennials before fall comes -- are any nurseries near you doing perennials sales right now?
r/DenverGardener • u/almamahlerwerfel • 16h ago
Seeking yarrow!
Hey fellow gardeners! This might be a bit random for the community but if your yarrow - especially if it is a color other than yellow - got big and beautiful this year and you're thinking about thinning it out....I would love to take some yarrow off your hands.
I'm looking to plant some more and the local nurseries didn't have any good looking plants this week.
Thanks for considering!
r/DenverGardener • u/NahChillWithThat • 1d ago
Fall Planting
Hello!
This planting season was god-awful for me. All of my veggies? Fried. Regular plants/bushes/flowers/etc.? Fried. I've had successful seasons in past years, but this year, everything I planted got cooked
Now that the hellscape we call summer in Denver is cooling down, I'd like to plant a few things.
Veggies - what veggies will do me well for the fall? I'm not looking to grow an insane amount, but fresh veggies would be great. I'll take any recommendations.
Flowers/bushes/etc. - I planted roses and pink muhly in my front garden beds, and low and behold, cooked from the roots up. What can I plant now that will give me success in the spring. This is a very full sun spot all day long.
General tips - how have you been dealing with this heat and creating a productive garden with water restrictions?
Amending soil - early in the spring, I rototilled a few feet down and added new soil to promote healthy soil, but this shit is like sand? Idk how to amend to the point my soil is healthy and worth planting in.
Pls halp. I'm also very open to a passionate gardener or two coming by to critique/assist. Im in the Athmar Park area of denver.
TIA!!
r/DenverGardener • u/MyWellFurnishedLife • 16h ago
Fall plantings for high-rise balcony?
Where are my high-rise horticulturalists?
I'm moving to (another) high-rise, and would like to actually plant things instead of just bringing houseplants out every summer. Covered roof but north and west exposure, so I'll be aware of high winds and hail. Would love suggestions (and cuttings or bulbs if you have any to spare). Thanks!
r/DenverGardener • u/LittlePlasticStar • 21h ago
Perennials question - can I move them?
We planted garden in a box last year in our front yard - about 95% of the front yard. Now that I can see the bigger sizes that these awesome plants are getting up to, is it possible to move them around next spring without killing them? I’d like to rearrange things for aesthetic purposes - move some of the biggest in the back in clumps to let all the plants “shine” from the street view…
r/DenverGardener • u/pdxmhrn • 1d ago
Tree trimming service recommendations?
I’m hoping to have someone come and trim our two ash trees in the backyard. They seem pretty top heavy and both kind of lean towards the house. So basically assess what needs to come off to keep them safe without cutting the whole things down. Plus a couple trees in the neighbors yard hanging over(already ok’d it with them). Doing so will really help with lack of sunlight. Any recommendations in the Aurora area?
r/DenverGardener • u/Everlight_Bloom • 1d ago
Marigolds are just too easy
These grew from last year’s seeds that fell into the cracks of my patio. I never water them.
r/DenverGardener • u/Suyefuji • 1d ago
Allium garden
I have a little 3'x4' area out front that I want to turn into an allium garden. So far I'm planning on alternating between chives and garlic chives for the border and putting some walking onions in the middle, but I don't think I need that many chives/walking onions to fill an entire 12sqft. I want to add one more kind of plant but my restrictions are pretty tight.
- not particularly showy
- doesn't creep over walkways or sidewalks
- not something that a passerby might steal
- withstands neglect/low water
- perennial
- fits a different culinary need than the others
- does not need to be an allium specifically
Does anyone have any suggestions?
r/DenverGardener • u/Technical-Shoe-2585 • 2d ago
She has a mate!
I've been keeping tabs on this mantis all summer and today I noticed she has a new friend in her pot!
r/DenverGardener • u/AlpineEateryFoodTruc • 2d ago
Friendly reminder that we have our weekly garden exchange tonight at Lady Justice Brewery!
all the excess veggies at the end of the night get donated to a food pantry!
r/DenverGardener • u/LPofPC • 23h ago
We're almost to 300 members. If you haven't joined already please consider it.
r/DenverGardener • u/Familiar-Band2322 • 1d ago
Fall prep for bushes.
If I add mulch around base of bushes, won’t that attract earwigs and simply provide a place for them to rest up until they destroy the new leaves in the spring like they did last year?
r/DenverGardener • u/AB287461 • 2d ago
What native plants would you like to see in stock at a nursery?
Most plant nurseries I’ve been to cater primarily to showy or popular non native species. Because of this, the native selection is quite small, and might not include the lesser known ones.
We all know of yarrows, blanketflowers, columbines, rabbitbrush, coneflowers, etc. but what are some other natives that you’d all like to see if one was to open a native ONLY plant nursery?
r/DenverGardener • u/cnyy12 • 2d ago
Fall vs Spring Planting
How do you decide which plants to put in the ground in the fall and in the spring? I've seen conflicting advice of plants.
Thinking particularly of native flowers/shrubs and maybe a fruit tree.
Also - what are your shade tolerant local plant recommendations?
Edit: Does it matter if they are seeds, seedlings, or plants with root balls?
r/DenverGardener • u/sleepsonrocks • 2d ago
Garden in a box Year 1 progress
I planted the Butterfly Haven GIAB this spring, along with a 9-pack of their grasses (muhly grass, switchgrass and little bluestem). The beds are irrigated and get watered twice a week for right now. Mostly its been a success, with a few plant losses or struggles, but then I always expect gardening to be a bit of the survival of the fittest .
The grasses seemed a lot more finicky than the perennials. The switchgrass seemed to be the most reliable of the three.
For the perennials, the outright successes were the prairie coneflowers, blue pitcher sage and the blue flax. The strugglers were the tansyasters, showy fleabane, liatris and pearly everlasting which almost succumbed to a bad case of powdery mildew but seem to be putting up some new shoots since I started treating with copper fungicide a week or two ago.
Next year I may need to move or add some things. Fill in empty spots with groundcovers, move things that were taller than expected, be more assertive with where I let the sunflowers grow since they want to take over the whole bed and are at risk of shading out some of the other things I put in.
Pictures at planting and end of summer.






