Grow Snapdragons That Make People Stop & Stare

Snapdragons are a staple of the cut flower garden. They’re an incredible filler flower that makes bouquets sing, they come in so many colors, and they look beautiful in a jar all on their own.

And there are so many more options than the 9-inch-tall, highlighter-yellow ones at your local nursery.

A couple of important things to know:

If you want truly amazing snapdragons, you’ll need to start them from seed yourself. The most beautiful varieties are bred specifically for cut flower production, and you won’t find those at a big box store. So before you rush out to buy every dreamy variety you see online, make sure you have a solid seed-starting setup ready to go.

1. Start With the Right Variety (Height Matters)

The biggest mistake people make with snapdragons?
Growing the short ones.

When choosing seeds, read the packet carefully. Look for varieties with a mature height of 36–48 inches.

The tall varieties are the true showstoppers. They give you long, elegant stems that are perfect for cutting, and they create serious impact in the garden.

If you want flowers that make people ask questions — grow the tall ones.

2. Start Seeds at the Right Time

Start snapdragon seeds 10–12 weeks before your last frost date.

Do not cover the seeds. Simply press them onto the surface of the soil in your trays. They need light to germinate.

You can lightly sprinkle fine vermiculite over the top to help prevent algae growth, that weird green layer that sometimes forms on the soil. It isn’t harmful, but it is a little strange looking.

I always recommend using a heat mat. It makes a huge difference in germination.

Snapdragon seeds take about 14 days to germinate, so be patient.

Once about ¾ of the seeds have sprouted, move the tray off the heat mat. Keep your grow lights close — about 1–2 inches above the seedlings — and raise them gradually as the plants grow.

3. Give Them Cold (They Like It)

Snapdragons are a hardy annual, which means they can handle chilly weather, and they actually prefer it.

Cool weather helps them grow taller, stronger stems.

Mine have survived 28°F nights and looked like they’d just come back from a spa day.

Cool weather = stronger stems and better height.

• Zones 7 and warmer: Plant in late fall. If temperatures drop below 28°F, cover them. You’ll be rewarded with long, gorgeous stems in spring.
  
  
• Zones 3–6: Plant snapdragons 4–6 weeks before your average last spring frost date. Watch the forecast and keep them well watered so they can withstand cooler temperatures.
  
  

Be sure to harden off your seedlings properly before planting them out. They need time to adjust from cozy greenhouse conditions to real-world weather.

Space plants about 9 inches apart.

4. Pinch Them (Even Though It Feels Wrong)

This is the step most people skip and it makes all the difference.

When your snapdragons reach about 12 inches tall, pinch them back to a leaf set around 9 inches.

I know. It feels like you’re ruining everything you worked for.

But here’s what happens:

From that pinch point, multiple stems grow instead of just one.
More branches = more flowers.

Snapdragons are what I call a slow cut-and-come-again flower. They take a little time to regrow after cutting, but they absolutely will and they’ll reward you with armfuls of blooms.

5. When to Harvest

Harvesting snapdragons is simple because the stems are long and straight.

Cut when the lower ⅓–½ of the florets on the stem are open.

Cut each stem deep into the plant to encourage long stems on future growth.

My Top 3 Favorite Snapdragons

If you’re not sure where to start, here are my tried-and-true favorites:

Madame Butterfly
Gorgeous ruffled blooms that almost look like peonies from a distance. You’ll start with one color and somehow end up wanting them all. They handle both cold and heat beautifully.

Maryland Flamingo
A bright coral showstopper that makes every bouquet look better. It somehow blends with everything while still stealing the spotlight.

Appleblossom
If you only grow one snapdragon, grow this one. It matches everything. It can feel soft and romantic or add depth to bold, bright arrangements. This is my most-used snapdragon on the farm.

The Simple Formula

If you remember nothing else, remember this:

Grow the tall ones.
Give them cold.
Pinch them.

Let’s get growing 🌸