r/DenverGardener Jan 07 '26

✅🗓️ Our 2026 free gardening webinar schedule is live! 🥳

30 Upvotes
We know what we're doing the second Wednesday of December 2026 at noon, do you?

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

Asian Jumping Worm in Colorado: What You Need to Know

2025 “Best Of” Plants from the CSU Trial Gardens

Get in the Zone: Do hardiness zones really matter?

The Basics of Fruit Tree Production

Myths, Mistakes, and Misunderstood Insects

All the Common Weeds and What They Tell You

Native Plants are Imaginary

Showstoppers and Habitat Heroes: Native Plants for your Home Landscape

Don’t Get Hosed with Landscape Irrigation

Spooky Plant Pathogens: Creepy Cases from the Garden

Scenes from a Cemetery: Plant Edition

Reading the Market for Plant Trends


r/DenverGardener Mar 03 '24

Bindweed Info Dump

115 Upvotes

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 10h ago

bountiful harvest

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101 Upvotes

idk how we’ll get all this eaten! garden just so productive this year!


r/DenverGardener 16h ago

THIS IS WHY

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297 Upvotes

r/DenverGardener 9h ago

Timely tomato tip for new gardeners

19 Upvotes

With it starting to look like we might really get some decent rain, be advised that considering how dry we’ve been, a good soaking rain may split tomatoes that are nearing ripe stage. This is caused by the sudden uptake of lots of free water. Nothing you can do about it but to soften the heartache of seeing them do this, it might be a good idea to harvest a few nearly ripe ones now.


r/DenverGardener 5h ago

Solanum triflorum?

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3 Upvotes

Is this our native (albeit weedy) solanum triflorum? I was JUST talking to someone in this group about nightshades, totally unaware some birds have apparently already planted it in my yard. 😂

I tend to leave even weedy volunteer plants if they're native, but it has established itself close to where the kids play - I should probably just pull it, right? They're not little, they can identify plants, but if it's poisonous it still seems risky.

I'm so bummed that it was NOT the purple prairie clover I actually planted lol. They are really cool looking though.


r/DenverGardener 11h ago

Busy bugs

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5 Upvotes

r/DenverGardener 16h ago

Help with cherry tomatoes

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14 Upvotes

Hey,

Any tips on getting flowers to turn into cherry tomtoes? A lot of the buds are just dying.

Thanks


r/DenverGardener 17h ago

Am I screwed?

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7 Upvotes

I found literally hundreds of these hyperactive little worms in one of my garden boxes this morning. Are they the dreaded jumping worms I’ve been hearing about? If so, what do I do??


r/DenverGardener 6h ago

Potted plant recommendations

1 Upvotes

I have two big pots on my front porch, I’m thinking something that stays ornamental will look nice year round. Like a grass or small bush. Anyone have luck with something staying in their pot year round? Even if it dies but keeps shape in winter but then gets green again?


r/DenverGardener 16h ago

Help with pumpkins

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7 Upvotes

My pumpkins keep “self aborting” their fruit. A little baby pumpkin will form and the flower isn’t even big enough to manually pollinate before it just rots and turns brown. I just added some fertilizer to the soil and have been watering them more in this heat, but curious what other gardeners think.


r/DenverGardener 1d ago

These Japanese beetles are frazzling my nerves

43 Upvotes

The other day, I literally found myself holding a handful of 10 of them and screaming, running across the yard, “the horrors! the HORRORS!” at least it was good for a laugh.

Today I had to immediately hang up a phone call and commence scooping into soapy water because I saw piles of them bigger than I’ve seen all year. Some of them were even on plants that they don’t normally like because they have currently run out of rose flowers to eat.

Who else is losing their minds? I’m out there twice a day picking them off along with having a trap. I would love to hear your stories.


r/DenverGardener 1d ago

Tomatoes

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47 Upvotes

How are everyone’s tomato plants doing so far? Plants are bushing. Some fruit but I’m getting a lot of BER. Any tips would be appreciated🍅


r/DenverGardener 1d ago

Who need basil…

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23 Upvotes

Drowning in genovese and Thai basil right now


r/DenverGardener 18h ago

Identify this bug?

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2 Upvotes

I have a decent idea of what these are, but I figured I could get confirmation from this sub. These things are all over my tomatoes very suddenly, I had zero just two weeks ago. What are they?


r/DenverGardener 1d ago

Monsanto wins landmark case blocking thousands of lawsuits on pesticide use

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67 Upvotes

r/DenverGardener 7h ago

CPD: your lawn doesn't look like your neighbors'

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0 Upvotes

I am not the one to name and shame but CPD citing me for my lawn not looking like my neighbor's is a bit tone deaf.


r/DenverGardener 1d ago

Who says you can't grow broccoli in 100 degree heat?

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49 Upvotes

While I have no explanation, and last year, my broccoli bolted quickly, produced loose heads, and was hella bitter. This year, they are much tighter and dont seem to be suffering as much. Also, there are no aphids yet.


r/DenverGardener 1d ago

Fall seeding this winter?

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24 Upvotes

I can't seem to get a good answer on whether this whole El Niño thing means we will have another warm winter. I have a bunch of native seeds that need stratification, and I intended to direct sow in the fall/late winter- but I'm getting worried that they will fail if winter just leaves the chat again this year.

I'm absolutely terrible at artificial cold stratification and indoor sowing in pots, but should I try that instead? Any tips on that? I did it successfully using the paper towel method with a single apple seed my littlest child brought home clenched in his fist for me to plant for him (how could I refuse 🥹), but no success with anything else. Also, there are so MANY seeds. 😅

I had one glorious year that I winter seeded and everything came up beautifully, but this year was a depressing bust and I don't want to waste all these seeds.

What would you do?


r/DenverGardener 1d ago

Empty Raised Bed

5 Upvotes

Just ripped out a bunch of overgrown arugula and dead spring vegetables in 8x8 raised bed. Any suggestions on what can be planted now? Wait a few weeks until maybe there’s cooler temps? It’s on the south side of the house and gets pretty dried out during the day.


r/DenverGardener 1d ago

Runner Beans Issue?

7 Upvotes

Anyone else having trouble with their beans? Admittedly this is my first year growing Scarlet Runner Beans but haven't had trouble with other bean varieties in the past - I have really good vines and there were plenty of flowers and bees in the flowers but they all seem to just fall off and I'm not getting any pods forming - any ideas? I'm assuming it's heat but wanted to see if others were having trouble. The spot that they're in gets mostly morning sun and a little dappled evening sun so it's shaded from the harshest part of the day....


r/DenverGardener 2d ago

Yea I know grass sucks. But here is the difference of Colorado specific drought resistant grass vs blue grass.

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96 Upvotes

watering twice a week, I planted that in early spring to cover dead spots. Considering going zero grass next year, but wow this stuff holds up great with barely any water.


r/DenverGardener 1d ago

Will large ceramic planters be okay during the winter?

7 Upvotes

Weird question for y'all that might sound crazy. I'm weighing options for large outdoor planters, and I was wondering if ceramic is a good option here?the only reason I ask is because I grew up in Wyoming and it gets cold enough that the water in soil will freeze, expand, and crack or complete break the ceramic planter. Is that an issue in Denver, or is it just that much colder one state up 🫠.


r/DenverGardener 2d ago

Progressively more desperate attempts to shade the garden

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155 Upvotes

I thought at least some of the kids could tough out the heat, but it just keeps getting hotter and I just keep getting more desperate to keep them alive!

Any tips to beat the heat (or just commiseration) are welcome!


r/DenverGardener 1d ago

Drip system help

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2 Upvotes

This might be silly but these two points separated from my drip system yesterday. I was able to push them back together but I’m wondering if there’s something I can use to hold them better? I’m thinking that silver piece needs to be tighter?