3,226 Garden Web Discussions | Dahlias


I've broken off branch tips in the garden, plunked them in a nearby 'finger hole' and they've gone on to grow, bloom, and produce tubers all, so the answer is yes: either re-pot or plant your rooted dahlia. It/they have a good chance to grow and produce.

Some are painfully slow to show up. Don't know how many you're talking about, but I wonder if you brought them inside in a bright window, if they'd pop sooner with more consistent temps. Then you can be assured they'll grow and re-acclimate them to outdoor life and cooler night temps.
Just a thought. You can certainly keep waiting as well, but I wouldn't be too worried just yet.

How about container planting...I've planted my dahlias yesterday, then last night it went down to 34. One pot I was able to bring inside but the other I tried to cover as best I could. They looked a little droopy this morning--will they recover? What's the best way to cover? The pot is pretty heavy to move. I had coleus in the same pot, they definitely look gone. I don't know what I was thinking, just too excited for warm weather I guess. I'm in zone 6, NW NJ.

Every year in Quebec i plant mine early mine have been in the ground for about a week now I check them everyday so far so good they even pass the snow we got last week if we get a frost it will be a ground frost and some of mind are just about one inch high so they should be ok
Anna

Yes. Check out the link for southern growers.
Here is a link that might be useful: Dahlia Society of Georgia

Barely damp soil will do until the shoot gets a few inches tall and roots develop on the tuber. Then you can water it more.
If you plan to keep it in a pot, I'd recommend using soil polymers to help keep the soil moisture up. Pots in full sun dry out fast.

You aren't going to hurt a thing by giving them a little drink of water. I just watered some thirsty looking soil with rooting/growing dahlias today.
I wonder if the ones on soil in your window are the ones we thought were broken below the neck? It doesn't sound too promising for eyes if there's nothing green, pink or purple budding out. Wait and see though, before you give up on them.

Thanks poochella,
I don't have any hopes for those tubers that were not attached to a neck, but there is one tuber that I have hopes for. It is the one with the neck that had no eyes yet, the one that I did not divide.
I'll definately give it more time. :c(

ADS.org at the link below has classification definitions that may be useful. Just click for definitions and click on colors/sizes for examples.
Here is a link that might be useful: American Dahlia Society

Yea, I am not really planning on getting them in the ground until the 15th - unless we continue to have a really warm spring (I've already got waist high clematis, blooms on my trolius, the lilacs around here are blooming...).
My question related more to whether or not having them in the fridge was ok if they have sprouts AND exactly how people take the ground temps.

Hey there,
The refrigerator might be a little too cold.
Instead of 60 degrees, you could just plant them when everyone usually plants their tomatoes or melons. Melons are usually a couple of weeks later.
I am not sure about that 60 degree figure and think it might be folklore. Please see other messages on the forum, where other people also discuss, including someone who is experimenting by planting out tubers early in zone 5. If you do want to go with 60 degrees, it refers to the AVERAGE through the day and night, and I think also refers to 6 inches down, where people usually plant their tubers.
If I were you, I would start the plants inside in pots and then bring them out in a few weeks. You could also keep them outside during the day when temperature is high enough. Mine thrive this way.



Thanks for the answer, I'll be covering the planters on the deck with plastic, to keep them from filling with water, then freezing and bursting--least thats my thought.
The other thought was to make loops on the back of the planter (outside) so I can slip rebar down for support.
Oh I see... that makes sense.
I have two large pots that I have drilled extra drainage holes and then pounded rebar (5' tall) through them about 1/2 down to 'stake' them down. I grow large trees in them and the wind was a problem. But these are on a gravel walking path... your idea sounds great for a deck!
Keriann~