Planting Saffron Crocus in Containers: A Little Fall Project
If you're looking for a fall gardening project that pays off in a big way, saffron crocus (Crocus sativus) might be exactly what you need. Yes, the same saffron that costs a small fortune at the grocery store. We recently planted a batch in containers, and wanted to share what was learned along the way.
Getting the Container Ready
Drainage is everything with crocus corms. Too much standing water and they'll rot before they ever get the chance to bloom. A few things worth doing before you plant:
Drill (or check for) plenty of drainage holes. Spread evenly across the bottom, not just clustered in a couple of spots. You want water to have somewhere to go no matter where it pools.
Elevate the container slightly off the ground so water can actually drain out from underneath.
Line the bottom with a thin layer of window screen mesh if you'd like, before adding soil. It keeps the potting mix from washing out through the holes, while still letting water flow freely.
Choosing Your Soil
A high-quality potting mix with good aeration works beautifully. If your mix doesn't already have a lot of perlite in it, you can amend with a bit of coarse sand or perlite for extra drainage. Skip anything too rich or heavy (think succulent or cactus blends) as saffron crocus like drainage, but they also want more body and nutrients than a lean, gritty mix typically provides.
Planting the Corms
Here's the fun part:
Fill your container, leaving about an inch of space below the rim.
Plant each corm about 3–4 inches deep, pointy side up.
Space corms 3–4 inches apart. They'll multiply over the years if left in place, so give them a little room to spread.
Water well after planting to help the soil settle in around them.
A Note on Mulch
Since these saffron crocus bloom in fall (sometimes just weeks after planting), hold off on a heavy mulch layer right away. You don't want anything blocking those blooms as they push up through the soil. Once flowering finishes and you're just looking at foliage, that's the time to add a light 1-inch mulch layer to protect the corms through winter dormancy. A quick note for anyone in a colder climate: saffron crocus are typically hardy to about zone 6, but container-grown corms are more exposed to cold than ones planted in the ground, since there's no surrounding earth to buffer the temperature swings. If you're gardening in zone 5 or colder, consider moving the container into an unheated garage, shed, or similar sheltered spot for the winter once the foliage dies back, then bring it back outside in spring.
What's Next
Now it's just a matter of watching and waiting; saffron crocus tend to surprise you with how quickly they bloom once they're settled in. We'll share an update with photos as soon as those first purple flowers make their appearance.
Have you grown saffron crocus before, or thinking about trying it this fall? Stop by the shop! We'd love to talk corms, containers, and everything in between.
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