Matilija Poppy or Sunny-Side-Up
Romneya coulteri (PAPAVERACEAE)
Planting and Growing Matilija Poppy
You’ll find everything you need to know to plant and grow matilija poppy or sunny-side-up in the accompanying table’s tabs:
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- Flowers, foliage, and root structure of matilija poppy or sunny-side-up
- Season of bloom and planting time for matilija poppy or sunny-side-up
- Plant hardiness and growing conditions for matilija poppy or sunny-side-up
- When, how deep, and where to plant matilija poppy or sunny-side-up
- How to plant matilija poppy or sunny-side-up
- Watering, fertilizing, care and pests or diseases of matilija poppy or sunny-side-up
- Landscape and indoor uses of matilija poppy or sunny-side-up
- Comments about matilija poppy or sunny-side-up and its features
Growing Matilija Poppy
Summer rhizome. Deciduous. Stands to 8 ft. (2.4 m) tall. Smooth, oak-leaf-shaped, deeply toothed, midlength, hairy, gray green leaves, to 4 in. (10 cm) long, in triplets along stalk.
Matilija Poppy Planting and Care Guide
Flowers
Late spring–summer. White with large, bright yellow centers. Very showy, terminal, upright, open, cup-shaped, ruffled, crepelike flowers, to 8 in. (20 cm) wide.
Best Climates
U.S.D.A. Plant Hardiness Zones 7–11.
Soil Type and Fertility
Moist, well-drained soil. Fertility: Average–low. 6.0–7.5 pH.
Where and How to Plant
Autumn in full sun. Space 3–5 ft. (90–150 cm) apart, 4–6 in. (10–15 cm) deep for root divisions, 1–2 in. (25–50 mm) deep for scarified seed.
Proper Care
Moderate. Keep moist winter–spring; reduce watering summer–autumn. Drought tolerant when established. Fertilize in spring. Propagate by division, seed, suckers.
Lifting and Storing
In-ground. Protect from frost.
About This Species
Good choice for accents, backgrounds in arid, natural, rock gardens. Pest resistant. Fungal disease susceptible.