![[Seeds] - Caribbeangardenseed](http://caribbeangardenseed.com/cdn/shop/files/gift-card-gift-card-1_1024x1024_dfa857db-9150-4315-a362-7f0bb3fb9c47_60x28.png?v=1722895789)
A problem with your order? If we sent the wrong item or made a mistake, we’ll make it right. Returns & exchanges or Our Satisfaction Guarantee. Contact us at info@caribbeangardenseed.com to arrange an exchange, return, or refund under our policies.
Yellow Indian Paintbrush SEEDS (Castilleja sulphurea ) Perennial FLOWERS
Original price
$ 3.25
-
Original price
$ 10.94
Original price
$ 3.25
$ 3.25
-
$ 10.94
Current price
$ 3.25
Seeds usually dispatch within 3–5 business days. Live plants usually dispatch within 2–3 business days. These are dispatch times, not delivery estimates. If your order doesn’t arrive, contact us and we’ll arrange a replacement or refund.
Castilleja sulphurea — Yellow Indian Paintbrush, Painted Cups, or Yellow Paintbrush — is a striking native perennial wildflower with pale yellow bracts blooming in summer. Growing 1–2 feet tall, it thrives in moist sub-alpine meadows and exposed flats throughout the intermountain region. A semi-parasitic plant that requires a host plant to thrive; very drought tolerant once established. Full sun to part shade. Excellent for rock gardens and high-elevation native plantings. Blooms June through August.
Plant Highlights
- Pale yellow bracts; blooms June–August
- Native to the intermountain region — moist sub-alpine meadows and exposed flats
- Semi-parasitic: requires a host plant (best grown with grass) to thrive
- Excellent for higher elevations; very drought tolerant once established
- Full sun preferred; tolerates part shade
- Perfect for rock gardens and native wildflower plantings
Sowing Guide
Best sowing time: Winter or early spring — these seeds benefit from cold stratification to break dormancy.
Method: Sow with a thin layer of sand or fine grit as cover. Keep moist in a cool outdoor location.
Cold treatment: If seeds do not sprout within 4–12 weeks, place the damp seed tray in the refrigerator for approximately 4 weeks to provide a cold period. Seeds may take several months to appear — keep the pot or tray in a safe location and be patient.
Host plant tip: As a semi-parasite, Castilleja performs best when grass seeds are sown alongside it in the seed tray or planting bed.
Planting Specs
- Common name: Yellow Indian Paintbrush, Painted Cups, Yellow Paintbrush
- Botanical name: Castilleja sulphurea
- Type: Native perennial wildflower; semi-parasitic
- Bloom color: Pale yellow bracts
- Bloom time: June–August
- Height: 1–2 feet
- Light: Full sun to part shade
- Soil: Medium texture; moist; well-drained
- Drought tolerance: Yes (once established)
- Use: Rock gardens, native wildflower plantings, high-elevation landscapes
- Sowing: Winter or early spring; cold stratification recommended
LET OUR CUSTOMER SPEAK FOR US
