Coral bells like Primo ‘Black Pearl’ can be grown in containers, but keep in mind that it grows notably larger than standard varieties, so give it plenty of room to show off. If growing it on its own, choose a container that is at least 10” in diameter and 8” deep. If you plan to pair Primo ‘Black Pearl’ with other plants in a combination recipe, you’ll need a much larger pot, at least 18” in diameter.
Since Primo ‘Black Pearl’ is so flexible about where it can grow, there are loads of options in what to pair it with in a container. Just be sure that everything you choose likes to grow in the same conditions. Choose colors that will contrast with its jet black foliage like chartreuse, silver and orange, or go for a more monochromatic look by choosing soft purples and indigo planting partners.
Since Primo ‘Black Pearl’ has a mounding shape, use it as a “filler” in the combination container, then surround it with trailing “spillers” and add an upright “thriller” to complete the look.
If you’d like to save your Primo ‘Black Pearl’ Heuchera for next year, plant it in the landscape about 4-6 weeks before the ground freezes to give its roots enough time to anchor themselves in. If you garden in zones 6b-9, you should have luck overwintering coral bells in containers above ground in a cool, dry, sheltered location.