Bee balm, often translated as American mint, belongs to Monarda. Check the species or cultivar before copying a routine written for a spreading Mentha mint.
Choose a Monarda for the site
Bee balms vary in height, moisture preference and resistance to powdery mildew. Check the species or cultivar rather than assuming that every Monarda tolerates identical drought or winter conditions. Give vigorous forms room beside neighboring plants.
Establish roots in suitable soil
Many garden selections grow well with useful sun and soil that retains moisture while draining. Water new plants and check established clumps during dry periods. A shallow sprinkling on leaves does not replace water reaching the roots.
Reduce crowding and watch the foliage
Allow space for air to move through the planting. Powdery mildew is not automatically proof that the soil is too wet. Identify the problem and improve the relevant conditions before choosing any treatment.
Manage the clump over time
Remove spent flower heads if a tidier display or less seed is wanted. Divide congested healthy clumps at an appropriate stage and replant rooted sections promptly. Leave useful foliage while it is functioning instead of cutting everything down as soon as the first flowers fade.
Related reading
Bee Balm Varieties: Flower Colour, Height and Labels