Jan–MarApr–JunJul–SepOct–Dec
Planting
Days to maturity
Seasonal yields
Sow indoors · Direct sow · Transplant outdoors
← Explore Plants
Plant · P-003
Comfrey
Symphytum officinale
Comfrey is a fast-growing herbaceous perennial with broad, hairy leaves and a deep taproot that draws minerals up from far below the surface, making it a heavy source of chop-and-drop mulch and compost material. Clusters of small bell-shaped purple, blue or cream flowers open from late spring into summer and draw pollinators and slugs alike. Every leaf cutting regrows quickly, but so does every piece of root left behind, and this species also spreads by seed - a trait its sterile hybrid relatives lack.
Record at a glance
Growing profile
- Sun
- Full Sun · Partial Sun
- USDA zone
- USDA 4–8
- Soil
- Sand · Loam · Clay
- Moisture
- Dry · Moist · Moderate · Well-Drained
Vertical layer
Herbaceous- Soil pH
- 5.5–8
- Plant type
- Perennial
- Mature height
- 12–36 in
- Mature spread
- 9–30 in
- Plant spacing
- 24–36 in
- Root type
- Tap
- Spread pattern
- Both
Keep exploring
Similar plants
Discover more plants with shared forest layers or growing conditions.
Adzuki Bean
Vigna angularis (Willd.) Ohwi & H.Ohashi
Adzuki is the odd one out among the beans in this group: a very hot summer is actively too hot for it, since heat above about 35C damages…
Herbaceous · USDA 3–11
African Eggplant
Solanum aethiopicum
African Eggplant, also called gboma or scarlet eggplant, is a West and Central African relative of eggplant that gives two harvests from one…
Herbaceous · USDA 8–12
Agrimony
Agrimonia eupatoria
Agrimony is a slender herbaceous perennial of sunny, disturbed ground across Europe and western Asia, grown mainly for the tannin-rich leaves…
Herbaceous · USDA 5–9
Alfalfa
Medicago sativa
Alfalfa is a deep-rooted perennial legume grown worldwide as one of the richest forage crops available, its taproot running six metres or…
Herbaceous · USDA 4–11
Alsike Clover
Trifolium hybridum
Alsike Clover fixes nitrogen in wet, acid ground too cold and heavy for red clover to thrive in, and its flowers keep bees working all season…
Herbaceous · USDA 5–9
Amaranth Greens
Amaranthus tricolor
Amaranth greens are one of the few leafy vegetables actually built for peak summer heat rather than one that just tolerates it - sown once…
Herbaceous · USDA 2–11
The deeper layer
Plan what comes next.
- Primary
- Locked ecological function
- Secondary
- Locked ecological function
- Byproduct
- Locked ecological function
Behind the record
- Locked research reference
- Locked research reference
- Locked research reference