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Growing Zinnias From Seeds In Summer

August 08, 2026

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I absolutely adore a colorful garden.

Unfortunately, I don't have the greenest thumb.

Oh sure, I know what I'm supposed to do to fill my yard with really big blooms.

Orange Zinnia Flowers

I just don't have the follow through.

Once those plants go in the pots, or the ground, I leave the watering and the feeding to our sprinkler system and Mother Nature.

And they're not always super reliable.

However, my husband is...he's the master gardener around here. He diligently tends to each bed and container and the results are always stunning.

Like the morning glories he trained on a trellis and the pumpkins he planted in our small garden last year. 

So when he said he wanted to plant zinnias under my kitchen window, I was all in.

I adore zinnias. They're truly my favorite late summer flower...so bright and cheerful and they always attract a lot of friends.

Butterfly On A Zinnia Flower

We used to plant them every year, combining seeds from different varieties, so that they grew into a zinnia bush of sorts

However, this year, we opted for a cutting garden, planting a traditional row with this fantastic pack of seeds.

Colorful Zinnia Seed Mix
The Zinnia Seeds We Used

And we couldn't be happier with the results. They were definitely a fresh and hearty pack and so easy to grow, even this lazy, undisciplined gardener was able to do it.

How To Grow Zinnias From Seeds


We started by pushing the mulch back in the bed to expose the dirt.

Digging A Trench For Seeds

Next, we carved out a small trench and sprinkled the seeds inside. No need to use a dibble or create deep holes, they sat right on top of the soil.

Planting Zinnia Seeds in a small trench

Then we covered them up with a layer of dirt and mulch and gave them a nice, long drink.

Covering Zinnia Seeds with dirt and mulch

That was on June 6th. I was afraid we started a little late to get some summer blooms.

But nope, by June 14th we already had sprouts.

Zinnia Seed Growth At One Week

We did water them daily until they took root, but after that we let the sprinklers do their job, every other day. Of course, if it was super hot and dry, we gave them an extra splash.

And by July 2nd we were really on our way. We fed them once, with a little sprinkle of this plant food we had on hand, but that's it.

Zinnia plants beginning to grow out of the dirt with lots of leaves

From there the growth was truly exponential. Those super hot and humid July days triggered some big jumps.

And by the middle of the month we had tons of flowers.

Multicolored Zinnia Flowers In The Garden

That just keep kept multiplying!

In a stroke of luck, a few weeks after we planted them, we found some decorative metal fencing at the curb and grabbed it.

It's those kind of charming elements that really take the garden up a notch.

Plus, it's done a fabulous job of defining the bed and keeping those leggy stalks standing tall.

Growing A Zinnia Cutting Garden From Seeds

Which has been super helpful when the little yellow finches come to visit our lovely cottage garden.

They're almost as vibrant as the flower petals.

Yellow Finch On Zinnia Flowers

They linger in that lush zinnia patch all afternoon, and I get to enjoy the view whether I'm outside in the yard or inside the kitchen.

A Yellow and Black Finch Sitting On Zinnia Flowers

It's my own little cutting garden.

That's almost too pretty to cut.

Well, almost. 

Not bad for a girl who can't garden.

😉

Are you a zinnia fan?

Happy Planting, Friends!
Kim Signature


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  1. Your garden is very colorful! I've never grown zinnias, but love looking at the fall fields filled with them. Looks like there might be time to plant my own cutting garden. I think I'm going to give it a try!! Thanks!

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  2. Zinnias are my favorite though I never have great luck with them here in our rainy summers. It doesn’t stop me from trying every year though. Your patch is amazing! The fact that you can enjoy from your kitchen is icing on top. Pamela

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  3. Wowsie. Your Zinnias are beautiful and boy did they fill in nicely. It always is wonderful to be able to look out the window and see beauty. Have a great new week ahead. Hugs. Kris

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  4. Sara (birdzofafeather.ca)August 8, 2026 at 10:00 AM

    How beautiful! I've never planted zinnias, but now you've given me inspiration to try next year!

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  5. Oh my word! I am so jealous. We (actually, my master gardener hubby!) planted zinnias as he's done many times in the past. And they have been a dismal failure. Only a few came up and so far we have one flower... Maybe bad seeds? I did enjoy seeing yours!

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  6. Zinnias are a pretty flower and usually easy to grow. Kudos for growing such a pretty garden of zinnias. They look great, so colorful.

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  7. Hello Flower Friend,
    Oh it is beautiful. I love the pretty fence you have around them too.
    I love zinnias, they say summer!! :-)

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  8. Hi Kim, your garden photos and flowers 💐 are gorgeous. 🌹 I do love pretty much all flowers.
    Beautiful photos, dear friend. ❤️ Thank you so much for sharing.

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  9. Oh, they are beautiful. I am for sure a zinnia fan and have always wanted to do a cut garden. It was on my list for this past summer but due to surgery and such it didn't happen. But hopefully next year!!!! This gives me hope I can do it. Oh, that finch!!!!!!!!!!!!!!

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  10. Zinnias are my 'go-to' for color in a garden. They are easy to grow, the pollinators love them, and when they are done blooming, they give you lots of new seeds for next time. Yours look beautiful - my compliments to the gardener!

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