How to Grow Bee Balm (Bergamot) From Seed

Wild bergamot is a hardy perennial, so plant it once and it returns each year. The seeds germinate best after a cold, moist period. The easiest route in cold-winter regions like the Midwest and Northeast is to scatter seed outdoors in fall and let winter do the chilling. For a spring start, chill the seeds in damp mix in the fridge for 4 to 6 weeks, then sow indoors 6 to 8 weeks before your last frost. In milder zones, an early spring surface-sowing works too, though germination is more even with a cold spell first.

Bergamot seeds are small and need light, so press them onto the surface of moist soil or seed mix and do not bury them. Keep the surface evenly moist at about 60 to 70F and seedlings appear in roughly 14 to 28 days. Transplant or thin to 12 to 18 inches apart in full sun to part sun and well-drained soil. Good spacing matters here: airflow between plants is the single best way to keep the leaves healthy later in the season.

Keep the soil evenly moist for young plants, then let established bergamot handle short dry spells; it dislikes soggy ground. Water at the base rather than overhead to keep the foliage dry, since crowded, damp leaves can pick up powdery mildew. Deadhead spent flowers to bring on more bloom, and cut the plant back in late fall. Bergamot spreads by underground rhizomes, so divide the clump every 2 to 3 years in spring or fall to keep it vigorous and in bounds.

Bergamot is a pollinator powerhouse, drawing hummingbirds, native bees, and butterflies to its shaggy blooms. It shines in a naturalistic bed with other sun-loving nectar plants that keep the buffet open all season. These four make great companions, and you can add any of them in one click:

For cut flowers, choose stems with freshly opened blooms, trim off the lower leaves, and set them straight into water. To dry the flowers and aromatic leaves for potpourri, cut stems as the blooms open and hang small bundles upside down in a warm, dark, airy spot. To save seed, watch the flower heads, and when they darken and dry, cut them and shake or rub out the small seeds to store cool and dry.

Wild bergamot is first and foremost a pollinator plant, its lavender-pink, tubular flowers a favorite of hummingbirds, long-tongued bees, and butterflies. The blooms are lovely as cut flowers, and the minty, aromatic leaves and flowers have long been dried for fragrant potpourri and brewed into a traditional herbal tea. It is a natural fit for prairie plantings, cottage borders, and any garden meant to buzz with life.

• Powdery mildew: the most common issue. Grow in full sun with good spacing, water at the base, and thin or divide crowded clumps.
• Slow or patchy germination: the seeds need light and usually a cold-moist period. Surface-sow and cold-stratify or fall-sow.
• Spreading too far: bergamot travels by rhizomes, so divide every 2 to 3 years and pull stray shoots.
• Fewer flowers over time: crowded, undivided clumps bloom less. Divide to rejuvenate and improve airflow.