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Growing Cool: Osteospermum Seedlings

By Joannabanana
February 20, 2013

For strong stocky seedlings, grow cool. Some plants, like osteosperman, require a vernalization period to produce flower buds.

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Name: Michele Roth
N.E. Indiana - Zone 5b
I'm always on my way out the door..
I was one of the first 300 contributors to the plant database! Forum moderator Garden Sages Garden Ideas: Master Level Dog Lover Cottage Gardener
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chelle
Feb 19, 2013 6:58 PM CST
I guess I'd better start my seeds indoors now then, right? If I'm following the information correctly, I should then plan to move these plants outdoors when they're at least half-grown and the temps are within the required range? Or, am I already too late?
Cottage Gardening

Newest Interest: Rock Gardens


Name: Joanne
Calgary, AB Canada (Zone 3a)
I was one of the first 300 contributors to the plant database! Garden Ideas: Master Level Region: Canadian Charter ATP Member Seed Starter Roses
Plant Lover: Loves 'em all! Annuals Container Gardener Vegetable Grower Winter Sowing Enjoys or suffers cold winters
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Joannabanana
Feb 19, 2013 7:05 PM CST
Chelle, I think now is a great time to sow Osteos for you. Osteos can handle some low temps, but I would protect them from frost. I would germinate them at warm temps, let them grow for about 2 weeks with room temp and then move them cool when they form their true sets of leaves. So 1 - 2 weeks germination, 1-3 weeks grow room temp and then 2-3 weeks at cooler temps to form flower buds. Cool temp is around 60ºF
[Last edited by Joannabanana - Feb 19, 2013 7:08 PM (+)]
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Name: Michele Roth
N.E. Indiana - Zone 5b
I'm always on my way out the door..
I was one of the first 300 contributors to the plant database! Forum moderator Garden Sages Garden Ideas: Master Level Dog Lover Cottage Gardener
Native Plants and Wildflowers Plant Identifier Organic Gardener Keeps Horses Hummingbirder Hosted a Not-A-Raffle-Raffle
Image
chelle
Feb 19, 2013 7:22 PM CST
Oh, okay. I think I can do that! I thought they'd need the cooler temps after the pinching stage and I wasn't sure if I'd run out of cool weather by that point.

Thank you!

I'll start them tomorrow. You can't know how much this has helped me. I was stuck in a seed starting slump! Hilarious! I couldn't decide which seeds next needed my attention, so I hadn't sowed any at all in the past week. Whistling
Cottage Gardening

Newest Interest: Rock Gardens


Name: Joanne
Calgary, AB Canada (Zone 3a)
I was one of the first 300 contributors to the plant database! Garden Ideas: Master Level Region: Canadian Charter ATP Member Seed Starter Roses
Plant Lover: Loves 'em all! Annuals Container Gardener Vegetable Grower Winter Sowing Enjoys or suffers cold winters
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Joannabanana
Feb 19, 2013 7:30 PM CST
An entire week Hilarious! I'm starting lobelia now as well, they seem to grow slow at 1st
Name: Michele Roth
N.E. Indiana - Zone 5b
I'm always on my way out the door..
I was one of the first 300 contributors to the plant database! Forum moderator Garden Sages Garden Ideas: Master Level Dog Lover Cottage Gardener
Native Plants and Wildflowers Plant Identifier Organic Gardener Keeps Horses Hummingbirder Hosted a Not-A-Raffle-Raffle
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chelle
Feb 19, 2013 7:59 PM CST
Rolling on the floor laughing Yep. A week with no seeding...that's a looooong time!
Cottage Gardening

Newest Interest: Rock Gardens


Name: Caroline Scott
Calgary (Zone 4a)
Charter ATP Member Region: Canadian Bulbs Winter Sowing Enjoys or suffers cold winters Lilies
Peonies Plant Lover: Loves 'em all! Garden Ideas: Master Level
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CarolineScott
Feb 20, 2013 12:25 PM CST
This makes me think that they might do in a south window in a cool house?
Also I get mixed up with all the "daisy" plants?
Osteospermum is different from dimortheca which is different from? Livingston daisies?

I have "African Daisy" seeds labelled Dimortheca-do they need the cool period too?
And how about the Livingston daisies??? Do they need cool???

In the past I have got the Dimortheca kind to germinate, and flower from a direct outdoor seeding?
Name: Michele Roth
N.E. Indiana - Zone 5b
I'm always on my way out the door..
I was one of the first 300 contributors to the plant database! Forum moderator Garden Sages Garden Ideas: Master Level Dog Lover Cottage Gardener
Native Plants and Wildflowers Plant Identifier Organic Gardener Keeps Horses Hummingbirder Hosted a Not-A-Raffle-Raffle
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chelle
Feb 20, 2013 12:48 PM CST
...and not to confuse things any further Whistling , but I found out mine are Arctotis. Do they need the same growing conditions?

Sorry to be such a pain, Joanne. *Blush*
Cottage Gardening

Newest Interest: Rock Gardens


Name: Caroline Scott
Calgary (Zone 4a)
Charter ATP Member Region: Canadian Bulbs Winter Sowing Enjoys or suffers cold winters Lilies
Peonies Plant Lover: Loves 'em all! Garden Ideas: Master Level
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CarolineScott
Feb 20, 2013 12:55 PM CST
Yes, I forgot that I also have Arctosis---and some call them "African Daisy" too???
I have two types of Arctosis:
One is from a Red flowered with silver leaves and the other is a packet of Harlequin series???

Do the Arctosis ones also need a cool period???

Maybe I'll keep the house thermostat at 60ºF and begin the germination under lights where it is warmer and then move them
to the cooler part of the house in a south window.

I need to spend some time sorting all the African Daisy varieties and their growing conditions.
Name: Joanne
Calgary, AB Canada (Zone 3a)
I was one of the first 300 contributors to the plant database! Garden Ideas: Master Level Region: Canadian Charter ATP Member Seed Starter Roses
Plant Lover: Loves 'em all! Annuals Container Gardener Vegetable Grower Winter Sowing Enjoys or suffers cold winters
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Joannabanana
Feb 21, 2013 9:25 AM CST
This is an excellent article: http://www.osteospermum.com/dimorphotheca.htm I think Osteospermums are the only ones mentioned on this thread that need to cool temps to form flower buds,

The difference between:
Dimorphotheca - Annual (propagated by seed) green foliage.
Osteospermum - Perennial (propagated by cuttings) green foliage These are the hybrids sold as bedding plants in early spring, no seed readily available.
Both area type of calendulaea

Arctotis syn. Venidioacrtotis, Venidium: tender perennial, grown as half hardy annual (propagated by seed) silver foliage Blooms summer to fall
Arctotis fastuosa Zulu Prince is easy from seed
Thumb of 2013-02-21/Joannabanana/9b2af5
Name: Michele Roth
N.E. Indiana - Zone 5b
I'm always on my way out the door..
I was one of the first 300 contributors to the plant database! Forum moderator Garden Sages Garden Ideas: Master Level Dog Lover Cottage Gardener
Native Plants and Wildflowers Plant Identifier Organic Gardener Keeps Horses Hummingbirder Hosted a Not-A-Raffle-Raffle
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chelle
Feb 21, 2013 10:51 AM CST
Thanks so much, Joanne! Thumbs up
Cottage Gardening

Newest Interest: Rock Gardens


Name: woofie
NE WA (Zone 5a)
Charter ATP Member Garden Procrastinator Greenhouse Dragonflies Plays in the sandbox I was one of the first 300 contributors to the plant database!
The WITWIT Badge I helped plan and beta test the plant database. Dog Lover Enjoys or suffers cold winters Container Gardener Seed Starter
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woofie
Feb 21, 2013 1:24 PM CST
I have a couple of cuttings of osteospermum sitting in my kitchen window and I just realized that they have a couple of buds on them! So, according to this article, that's probably all I'll see off them this year? Or do you think, since my kitchen (surprisingly) stays very cool (ok, so I'm not big on cooking... Hilarious! ) they might continue to develop a few buds? I was going to pinch them back, but since they have buds, no way can I bring myself to do that!
Confidence is that feeling you have right before you do something really stupid.
Name: Joanne
Calgary, AB Canada (Zone 3a)
I was one of the first 300 contributors to the plant database! Garden Ideas: Master Level Region: Canadian Charter ATP Member Seed Starter Roses
Plant Lover: Loves 'em all! Annuals Container Gardener Vegetable Grower Winter Sowing Enjoys or suffers cold winters
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Joannabanana
Feb 21, 2013 1:46 PM CST
Sounds like a good spot for them. Think of it as one crop of flowers. You will probably have more buds develop over the next month. But once those buds open, the plant probably will not have another flush of blooms. The cool temp will help will more bud production for the flush of blooms. You may want to pinch them now so you get some side branching and keep them cool. Then you flower buds will form in about 4 weeks
Name: Joanne
Calgary, AB Canada (Zone 3a)
I was one of the first 300 contributors to the plant database! Garden Ideas: Master Level Region: Canadian Charter ATP Member Seed Starter Roses
Plant Lover: Loves 'em all! Annuals Container Gardener Vegetable Grower Winter Sowing Enjoys or suffers cold winters
Image
Joannabanana
Mar 6, 2013 3:17 PM CST
Hi Everyone,

I did a bit of research and put together this little blurb for our local garden club.
Thumb of 2013-03-06/Joannabanana/a08470
Thumb of 2013-03-06/Joannabanana/eb9914
Thumb of 2013-03-06/Joannabanana/d44dd5
Thumb of 2013-03-06/Joannabanana/f598db
Name: woofie
NE WA (Zone 5a)
Charter ATP Member Garden Procrastinator Greenhouse Dragonflies Plays in the sandbox I was one of the first 300 contributors to the plant database!
The WITWIT Badge I helped plan and beta test the plant database. Dog Lover Enjoys or suffers cold winters Container Gardener Seed Starter
Image
woofie
Mar 6, 2013 3:26 PM CST
Joanne, I do hope you'll submit that "blurb" as an article here! Be much easier to copy it off that way! Big Grin

By the way, I have an Osteo that I have managed to keep alive for several years on my back porch, which I find amazing. I'm generally the kiss of death trying to overwinter anything here. Hilarious! I finally took some cuttings last year (the ones I mentioned earlier in this thread) and the little rascals just bloomed in my kitchen window! Yea!
Confidence is that feeling you have right before you do something really stupid.
Name: Joanne
Calgary, AB Canada (Zone 3a)
I was one of the first 300 contributors to the plant database! Garden Ideas: Master Level Region: Canadian Charter ATP Member Seed Starter Roses
Plant Lover: Loves 'em all! Annuals Container Gardener Vegetable Grower Winter Sowing Enjoys or suffers cold winters
Image
Joannabanana
Mar 6, 2013 3:29 PM CST
Great job with your Osteo! Hurray!

I guess I would need to redo the blurb so it is either about Osteos or about African Daisies Rolling on the floor laughing if I submit it to ATP
Name: woofie
NE WA (Zone 5a)
Charter ATP Member Garden Procrastinator Greenhouse Dragonflies Plays in the sandbox I was one of the first 300 contributors to the plant database!
The WITWIT Badge I helped plan and beta test the plant database. Dog Lover Enjoys or suffers cold winters Container Gardener Seed Starter
Image
woofie
Mar 6, 2013 3:48 PM CST
Lots of good information there, tho. It would make a great article, and be more accessible too if you submitted it as an article rather than just stuffing it here in this thread. Smiling
Confidence is that feeling you have right before you do something really stupid.
Name: Cinda
Indiana Zone 5b
Dances with Dirt
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gardengus
Apr 21, 2013 7:47 PM CST
I agree
Keep believing ,hoping,and loving
all else is just existing.
Name: Mary Stella
Anchorage, AK (Zone 4b)
Peonies Ponds Dahlias Canning and food preservation Lilies Permaculture
Garden Ideas: Level 2
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Oberon46
Mar 16, 2014 9:41 AM CST
If you right click on the article above it will show up in a screen full size then right click on it again and you can save the article to your computer for easier reading. Whistling
"What a person needs in gardening is a cast iron back with a hinge in it" Charles Dudley Warner (spelling edited by Dinu lol)
Name: woofie
NE WA (Zone 5a)
Charter ATP Member Garden Procrastinator Greenhouse Dragonflies Plays in the sandbox I was one of the first 300 contributors to the plant database!
The WITWIT Badge I helped plan and beta test the plant database. Dog Lover Enjoys or suffers cold winters Container Gardener Seed Starter
Image
woofie
Mar 16, 2014 11:06 AM CST
You actually don't need to right click on it to bring it up full size, just click on each image and it comes up full size, like any other photo. Then you can right click and save it to your computer, as you say. OR, you could just "star" the post so it's easy to find again.
@Joannabanana did you ever get around to submitting this as an article? In your copious free time, that is. Hilarious!
Confidence is that feeling you have right before you do something really stupid.
[Last edited by woofie - Mar 16, 2014 11:11 AM (+)]
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Name: Joanne
Calgary, AB Canada (Zone 3a)
I was one of the first 300 contributors to the plant database! Garden Ideas: Master Level Region: Canadian Charter ATP Member Seed Starter Roses
Plant Lover: Loves 'em all! Annuals Container Gardener Vegetable Grower Winter Sowing Enjoys or suffers cold winters
Image
Joannabanana
Mar 16, 2014 12:21 PM CST
No, just this one. Not a lot of free time
http://garden.org/ideas/view/Joannabanana/1207/Growing-Cool-...

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