Image
May 15, 2018 2:27 PM CST
Name: Carly Rush
Oceanside, California. Sunset (Zone 10a)
Aroids Salvias Roses Lover of wildlife (Raccoon badge) Native Plants and Wildflowers Hummingbirder
Dahlias Critters Allowed Cat Lover Region: California Cactus and Succulents Butterflies
I've tried twice to grow from seed and I haven't had any germination. I started in jiffy seed starting mix with some perlite mixed in for drainage. I sowed the seeds on top and did not cover but did keep them consistently moist. I did this two separate times and waited over a month with absolutely no germination. Do the seeds need to be extremely fresh like delphinium seeds? I keep all my seeds in the refrigerator. I bought the seeds in December of 2017. Oh and I watered the seed starting mix with a hydrogen peroxide mixture. Which has always helped my seedlings grow at a remarkable rate compared to not using it. I'm so frustrated! I really want to grow heliotrope from seed, I have never seen heliotrope in any nurseries around me.

If anyone has had success, please share!

Thank you,
Carly
Image
May 16, 2018 5:58 AM CST
Name: Caroline Scott
Calgary (Zone 4a)
Bulbs Winter Sowing Plant Lover: Loves 'em all! Peonies Lilies Charter ATP Member
Region: Canadian Enjoys or suffers cold winters Million Pollinator Garden Challenge Garden Ideas: Master Level
It sounds like you do everything to promote germination.
To me it sounds like the seeds were not as fresh as they might be ?
Image
May 17, 2018 4:52 PM CST
Name: Janine
NE Connecticut (Zone 6a)
Cat Lover Native Plants and Wildflowers Region: Connecticut Seed Starter Herbs Plant and/or Seed Trader
Million Pollinator Garden Challenge
Heliotrope seeds are notorious for their low germination rate. My suggestion is to sow a higher quantity of seeds than you normally would for the amount of plants you'd like to end up with.
Image
May 21, 2018 12:13 PM CST
Name: Carly Rush
Oceanside, California. Sunset (Zone 10a)
Aroids Salvias Roses Lover of wildlife (Raccoon badge) Native Plants and Wildflowers Hummingbirder
Dahlias Critters Allowed Cat Lover Region: California Cactus and Succulents Butterflies
Ok I will try that, thank you Janine. 🙂
Image
May 21, 2018 5:19 PM CST
Name: Julia
Washington State (Zone 7a)
Hydrangeas Photo Contest Winner 2018 Garden Photography Region: Pacific Northwest Celebrating Gardening: 2015 Forum moderator
Plant Database Moderator I was one of the first 300 contributors to the plant database! Dog Lover Sempervivums Container Gardener Foliage Fan
I grow heliotrope every year. I do give them bottom heat at about 70 in my greenhouse that is heated at 65. I sow in March in a Nursery flat with a dome over it.
Thumb of 2018-05-21/springcolor/36677d

If you don't have this one of those plastic salad containers works. The dome helps keep the see moist.
I buy my seeds from Hazards Seeds, mini- marine variety. They do have a low germination rate as stated above.
These are mine this year.
Thumb of 2018-05-21/springcolor/cfefe6
I've never used hydrogen peroxide.
Sempervivum for Sale
Image
May 22, 2018 9:11 PM CST
Name: Carly Rush
Oceanside, California. Sunset (Zone 10a)
Aroids Salvias Roses Lover of wildlife (Raccoon badge) Native Plants and Wildflowers Hummingbirder
Dahlias Critters Allowed Cat Lover Region: California Cactus and Succulents Butterflies
Julia, those look great! I'll try the dome and see if it helps. Thanks!
Image
May 22, 2018 9:45 PM CST
Name: Julia
Washington State (Zone 7a)
Hydrangeas Photo Contest Winner 2018 Garden Photography Region: Pacific Northwest Celebrating Gardening: 2015 Forum moderator
Plant Database Moderator I was one of the first 300 contributors to the plant database! Dog Lover Sempervivums Container Gardener Foliage Fan
Might put the tray on the top of the refrigerator to get some bottom heat.
Sempervivum for Sale
Avatar for CaliforniaDreaming
Dec 19, 2020 8:59 PM CST
Sonoma County, California, Zon
I just had six day germination with heliotrope seeds -- marine variety. It stunned me!

I bought them from a good online seed supplier. I planted them 1/8" deep in regular compost, in a plastic container with a plastic lid, with drainage holes punched on the bottom (from the supermarket, nothing fancy). Put them on a heat mat which has one temperature setting, under a cheap seedling starter light.

Yesterday, there were 25 heliotrope! I did not expect much success, and I also thought they would be a month or two before growing. Good thing they overwinter pretty well outside where I live, most years!

I took the lid off, they flopped over, so I propped it up with a pencil and today, a book, and I'm taking them off of the heat when they are a little bigger because they are tiny.

But these were super easy to propagate, and I do think it was the heat mat and light that helped, along with constant humidity. The seedlings are TINY, almost like foxgloves.
Image
Dec 20, 2020 5:05 AM CST
Moderator
Name: Allison
NJ (Zone 6a)
Charter ATP Member Forum moderator I was one of the first 300 contributors to the plant database! Dog Lover Hummingbirder Container Gardener
Million Pollinator Garden Challenge Region: New Jersey Seed Starter Garden Ideas: Level 1
Good luck with them
Image
Dec 20, 2020 7:07 PM CST
Name: Karen
Cincinnati, Oh (Zone 6a)
I was one of the first 300 contributors to the plant database! Cut Flowers Winter Sowing Charter ATP Member Seed Starter Echinacea
Plant and/or Seed Trader Region: Ohio Region: United States of America Butterflies Hummingbirder Celebrating Gardening: 2015
Good luck. I've never grown them from seed.

Karen
Only the members of the Members group may reply to this thread.
Member Login:

( No account? Join now! )