General Discussion:

Cutting back Delphiniums??


Messages posted to thread:

From:Date:Zone:
Diane22-Jul-01 07:24 PM EST 2a   
ed22-Jul-01 09:38 PM EST 5   
Diane23-Jul-01 10:42 PM EST 2a   
Northern Gardener24-Jul-01 02:26 AM EST 3   
24-Jul-01 12:48 PM EST   
JoanneS24-Jul-01 01:29 PM EST 3a   
Kay24-Jul-01 03:09 PM EST 3   
Carol24-Jul-01 04:14 PM EST 5a   
Betty24-Jul-01 06:01 PM EST 5a   
bill25-Jul-01 01:32 AM EST 3a   
Betty25-Jul-01 08:30 AM EST   
Kay26-Jul-01 01:24 PM EST 2b   
Diane01-Aug-01 09:43 PM EST 2a   
Lynn Brown08-Aug-01 06:05 PM EST 1a   
Marie09-Aug-01 12:15 AM EST 1b   


Subject: Cutting back Delphiniums??
From: Diane
Zone: 2a
Date: 22-Jul-01 07:24 PM EST

Question for all you experts out there. I think I've heard mention that you can take cuttings from Delphiniums and they will bloom again. Is this true and does it make them fuller?

Thank you!


Subject: RE: Cutting back Delphiniums??
From: ed
Zone: 5
Date: 22-Jul-01 09:38 PM EST

After first bloom is finished, cut off only the spent flowers. In most cases, the main stem will produce lateral shoots with more and smaller blooms, but, in some cases almost equal, and perhaps better than the first.


Subject: RE: Cutting back Delphiniums??
From: Diane
Zone: 2a
Date: 23-Jul-01 10:42 PM EST

Oh, so you don't cut the stock itself, just deadhead the flowers??

Thanks for your help.


Subject: RE: Cutting back Delphiniums??
From: Northern Gardener
Zone: 3
Date: 24-Jul-01 02:26 AM EST

Diane; Yes, you can "take cuttings" from Delphiniums but "taking cuttings", which means propagation, has nothing to do with a second flush of blooms. You are actually asking 2 separate questions. For secondary blooms, Ed is correct, just remove bloom stalk.

Browse through this website for more detailed info: www.delphinium.co.nz


Subject: RE: Cutting back Delphiniums??
From:
Zone:
Date: 24-Jul-01 12:48 PM EST

Diane- I'm confused too. The web site 'delphinium.co.nz' says to cut the flowering spike back to 5 cm or 2 inches above ground. This appears to be in conflict with Ed's advice or am I reading this wrong?


Subject: RE: Cutting back Delphiniums??
From: JoanneS
Zone: 3a
Date: 24-Jul-01 01:29 PM EST

I always like to cut back my delphiniums, but that will rarely give them enough time to recover before winter sets in. I just do it to keep things tidy. But this, however, all depends on where you are. Maybe in New Zealand (nz) it reblooms after cutting back. Has anyone in Canada had luck cutting it back for rebloom?


Subject: RE: Cutting back Delphiniums??
From: Kay
Zone: 3
Date: 24-Jul-01 03:09 PM EST

We try to put our delphiniums out in the open and prune the stalks early in the year to stand about four inches apart to prevent powdery milder. I always cut the flower stalks off as soon as they are finished blooming so I get nice blooms next year, not seeds. Never had them rebloom, worse luck. Saw a flower bed today with short sunflowers sheltering a beautiful stand of delphiniums. Unique and lovely.


Subject: RE: Cutting back Delphiniums??
From: Carol
Zone: 5a
Date: 24-Jul-01 04:14 PM EST

I always cut my delphiniums right back after they bloom, and they send up new growth and bloom again in September, although not as big as they were in June.


Subject: RE: Cutting back Delphiniums??
From: Betty
Zone: 5a
Date: 24-Jul-01 06:01 PM EST

I also cut mine right back to the ground, and have them rebloom in September. Like Carol says, not as big as the first blooming but still nice to see.


Subject: RE: Cutting back Delphiniums??
From: bill
Zone: 3a
Date: 25-Jul-01 01:32 AM EST

Good Delph chat...now, I really must transplant ours. They are not getting enough sun. When is the best time to transplant and where is the best place to put them? thanks.


Subject: RE: Cutting back Delphiniums??
From: Betty
Zone:
Date: 25-Jul-01 08:30 AM EST

I prefer to transplant in spring as I have experienced too many "thaw & heaves". My delphiniums usually are not through their second blooming until frost and I find that too late, could be done in fall if done early enough. I like early spring as soon as the foliage first shows (hope I spelled that right). They like sun, humus soil (I like to add rotten wood from old tree stumps), and well drained soil as they hate to have their feet wet. Delphiniums are my favorite plants.


Subject: RE: Cutting back Delphiniums??
From: Kay
Zone: 2b
Date: 26-Jul-01 01:24 PM EST

I love delphiniums, too. Here we have to watch not to let the stalks get too close to each other because sometimes they get powdery mildew. I don't fertilize them, (to prevent heavy foliage growth) and I approach them with 'murder in my heart' and a pair of snips in my hand in the spring, to cut down the smaller stalks so they get good air circulation. I think in the areas with longer seasons you might get a second flush of blooms but here, I just concentrate on building them up for next year's blooms. I tend to do my transplanting when I get the urge as I can't do it all in the spring. Most often they survive if you cut them back well and keep them watered. Watch them like a hawk in the spring in case the frost has heaved them out. If you notice that, press them down real good, keep them watered and hope for the best. I have never had that happen. Yet.

Kay


Subject: RE: Cutting back Delphiniums??
From: Diane
Zone: 2a
Date: 01-Aug-01 09:43 PM EST

Well, as the person who started this discussion, I thank you all for the great advice. Unfortuanately it's a moot point now as all my delphiniums "fell over" and cracked themselves off at the base during the awful rain we've had here for about two weeks. I had them tied to stakes, but I think with the amount of blooms I had combined with the rain, it was just too much. I now have a yucky bare patch at the back of my flower bed :-(

It's too bad, because it was all looking so nice. I'll cross my fingers, that they might send up some new blooms before September.


Subject: RE: Cutting back Delphiniums??
From: Lynn Brown
Zone: 1a
Date: 08-Aug-01 06:05 PM EST

Still lost! I have tall, leggy,ugly plants now that they have finished blooming. Can I cut them off just above the leaves to tidy them up, or not?


Subject: RE: Cutting back Delphiniums??
From: Marie
Zone: 1b
Date: 09-Aug-01 12:15 AM EST

Lynn, I just cut mine right down to the ground. The foliage gets so ugly I couldn't stand to look at it.I noticed new growth coming up though.


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