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Flowering bee balm (Monarda) in the garden
Planting, Growing, and Caring for Bee Balm Flowers
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Types
- Monarda didyma is bright red and grows 3 to 4 feet tall.
- M. didyma varieties that are resistant to powdery mildew include ‘Marshall’s Delight’ (bright pink), ‘Jacob Cline’ (deep red), and ‘Raspberry Wine’ (dark red).
- M. fistulosa produces lavender-pink blooms in late summer; tolerant of dry soils; commonly called “wild bergamot.”
- M. pringlei grows 18 inches tall and is immune to powdery mildew. ‘Petite Wonder’ and ‘Petite Delight’ are pink varieties.

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Is it possible the flower heads are just done? Prompt removal of the spent flower heads will prolong the bloom period.
Bee balms like an even supply of moisture during the growing season. For best performance, water bee balms every 7 to 10 days during dry periods. When watering, soak the soil to a depth of 6 to 8 inches. Applying a mulch around the plants will help to conserve soil moisture and reduce the frequency of watering.
These flowers do indeed get powdery mildew, a fungal disease. What you'll see in this case is a "powder" on the upper leaf surfaces and lots of leaf drop.
To avoid this issue, 1. plant in full sun, 2. space plants 1 1/2 to 2 feet apart, 3. divide plants every 2 to 3 years and 4. water during dry periods. Also, remove and destroy disease-infested plant debris in the fall. The fungal spores of powdery mildew survive the winter on disease-infested plant debris. The removal and destruction of this material removes the source of next year's infection.
Finally, buy mildew-resistant varieties. Varieties that possess good mildew resistance include 'Marshall's Delight' (bright pink flowers), 'Gardenview Scarlet' (scarlet-red flowers), 'Violet Queen' (violet-blue flowers), 'Raspberry Wine'(wine-red flowers), and 'Colrain Red' (purplish red flowers).


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