Growing Hydrangea from Seed?

June 28, 2018

What do hydrangea seeds look like when they first sprout? I planted some hydrangea seeds, and have been waiting patiently for them to sprout. I have noticed some white spots in the tray where I planted them. But am not sure if it's the hydrangea spout or not. It seems to be at a stand still right on top of the soil. If it is the hydrangea, they have stopped growing or grow very slowly. Can anyone help? I am new at this. Thanks.




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July 2, 20181 found this helpful
Best Answer

if you're starting from seed you have to start it in porous potting soil like vermiculite, watering before planting the seeds and then then putting plastic wrap over it, and covering up again with saran wrap after planting the seeds. As can be seen, it needs a humid environment to grow.

Then make sure they get lots of light but do not put them in direct sunlight - these plants as a rule are not direct sun plants and grow best in semi shade so as seedlings it's the same

So, enough moisture + enough light but not direct should be a good thing

attaching a photo of a hydrangea seedling, from this person's blog, who seems to be having a whale of a time getting plants to grow from seeds:

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3 More Questions

Here are the questions asked by community members. Read on to see the answers provided by the ThriftyFun community.

July 30, 2013

Can I grow hydrangea seeds indoors starting now (July 30)? I have seeds and want to let them grow indoors until next spring. I live in zone 6a.

By Pat A.


Gold Post Medal for All Time! 523 Posts
August 12, 20130 found this helpful

I couldn't find much information for you. I did find that seed should be sown in Spring in a greenhouse or cold frame. Also, if your seed are from a garden variety rather than a wild species, you should not expect them to come true to type.


I don't think a greenhouse or cold frame would be absolutely necessary.


Gold Post Medal for All Time! 523 Posts
August 12, 20131 found this helpful

I found more info for you.

Growing hydrangea from seed is easy, rewarding, and advisable if we are going to preserve the genetic diversity of the species. Seeds mature two to three months after the fertile flowers' senescence. They may be sown immediately. Dry storage is not necessary. Viability, however, is not diminished by it. Germination takes 10 and 14 days. Sow the seeds in flats and place them out of doors .


Keith E. H.

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February 16, 2015

How many seeds should I plant in a pot with a diameter of 20 centimeters? Thanks.

By Tu N.


Silver Post Medal for All Time! 255 Posts
December 6, 20170 found this helpful

I would plant 4. As they grow, you then thin (weed) out the weaker ones.

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January 31, 2015

What type of soil is best for starting hydrangeas from seed?



Gold Post Medal for All Time! 677 Posts
June 29, 20180 found this helpful

Use a soiless mix, available at garden stores.

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