Jan–MarApr–JunJul–SepOct–Dec
Planting
Days to maturity
Seasonal yields
Sow indoors · Direct sow · Transplant outdoors
← Explore Plants
Plant · P-948
Weld
Reseda luteola
Weld is a biennial herb historically grown across Europe and western Asia for the deep yellow dye extracted from its foliage and seed, once combined with woad's blue to produce Lincoln green. It wants full sun, tolerating partial shade where summers run hot, and thrives in poor, well-drained soil from sandy to loamy textures on neutral to alkaline ground. It self-seeds readily and can become weedy where conditions suit it, so seed set benefits from active management.
Record at a glance
Growing profile
- Sun
- Full Sun · Partial Sun
- USDA zone
- USDA 5–9
- Soil
- Sand · Silt · Loam
- Moisture
- Dry · Well-Drained · Moist
Vertical layer
Herbaceous- Soil pH
- 6–8
- Plant type
- Biennial
- Mature height
- 2–5 ft
- Mature spread
- 10–18 in
- Plant spacing
- 12–36 in
- Root type
- Tap
- Spread pattern
- Seed
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
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
Angelica
Angelica archangelica
Angelica is a very large, short-lived umbellifer grown for its candied stem and aromatic root - the thick young stalks are peeled and boiled…
Herbaceous · USDA 5–7
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