Beebalm is much more cold hardy, good from Hardiness Zone 4a to 9b. Unlike lavender, Beebalm does not like Dry Soil . Beebalm will also grow in either Sun or partial shade. When grown in moist soil and partial shade it spreads like crazy, which is wonderful if you are trying to create a natural looking landscape or want a quick ground cover. Lavender would surely die in these conditions.
Beebalm needs little care.
Divide it every three years to keep the flowers vigorous. However, if it doesn't have good air circulation around it, it is prone to fungus. Beebalm's fragrance is intoxicating. The more you smell it the more you want to smell it. Like lavender, the scent is spicy and strong.