How to Grow Pennyroyal
Plant Type: Perennial Herb
Harvest Season: Blooms Summer - Fall but can be harvested year-round.
Mature Size: 2 ft. tall with an indefinite spread.
Soil & Moisture: Prefers sandy, loamy, and clay soils. Prefers very moist soil and tolerates a variety of acidic conditions.
Exposure: Full Sun, Part Shade.
Zone Hardiness: 6-9, Zone 10 as an Annual.