Pet Safe
moderate Care
Black Horehound
Ballota nigra subsp. nigra
Black Horehound (Ballota nigra subsp. nigra) is a hardy, drought tolerant perennial herb native to Europe and North Africa. It produces small, dark purple blossoms in summer and thick, crinkled leaves throughout the year. The leaves and flowering tops are fragrant with a smell reminiscent of sweet hops and bitters, making it easy to identify. This plant is a popular medicinal herb, and has been used for centuries to treat coughs, asthma, and other respiratory ailments. Its grey-green foliage and tiny, colorful blossoms also make it a great accent for any garden.
Sunlight
Partial Shade
Water Needs
high
Water Every
"7-10" days
Sun Needs
partial-shade
Growth
Low
Care Level
Low
Watering Schedule
Frequency
Day 1"7-10" daysDay NaN
💧 Water every "7-10" days
Seasonal Adjustments
Adjust watering frequency based on temperature, humidity, and season. Water more frequently in summer and less in winter.
Pro Tip: Check soil moisture before watering. Stick your finger 1-2 inches into the soil—if it's dry, it's time to water!
Season
Fall
Sep Oct Nov
Winter
Dec Jan Feb
Spring
Mar Apr May
Summer
Jun Jul Aug
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Pruning Time
How to Propagate
Seed Propagation
Start seeds indoors 6-8 weeks before last frost date
Cutting
Take 4-6" cuttings in spring, root in water or moist soil
Division
Divide root ball in spring, replant sections immediately
Layering Propagation
Bend stem to soil surface, cover lightly, roots form in 4-6 weeks
Grafting Propagation
Join scion to rootstock, bind securely until healed
Plant Characteristics
Drought Tolerant
Is This Plant Right for You?
Good For:
- •Forgetful waterers
- •Homes with pets
Consider Carefully:
- •Indoor growing
Bloom Seasons
Care Tips
Light Requirements
Enjoys dappled or limited direct sun—about 2–4 hours of morning or late afternoon light and protection during peak midday sun.
Watering
Requires frequent watering to maintain moist soil. Don't let the soil dry out completely.