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How to Grow Sulfur Flower Buckwheat 'Psittacinum'

Sulfur Flower Buckwheat 'Psittacinum'

Eriogonum umbellatum 'Psittacinum'

shrub

Eriogonum umbellatum 'Psittacinum' is a compact, low-growing alpine buckwheat with distinctive parrot-colored (red-orange to crimson) flower clusters that fade to pink and rose tones. This cultivar is a superior ornamental selection of the native species, prized for its vibrant color display and extreme hardiness. It forms dense, evergreen mats perfect for rock gardens, alpine troughs, and xeriscape landscapes.

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Example Sulfur Flower Buckwheat 'Psittacinum' timeline · Pittsburgh, PA (Zone 6b)

  1. Plant Sulfur Flower Buckwheat 'Psittacinum'

    Around Apr 17

    Near Pittsburgh's average last spring frost.

  2. Tend & protect

    Late spring–summer

    Watering, feeding, and pest-watch reminders.

  3. Harvest Sulfur Flower Buckwheat 'Psittacinum'

    Late summer into fall

    Before the first fall frost (≈ Nov 8)

Sample dates for Pittsburgh, PA. Sign up to get exact Sulfur Flower Buckwheat 'Psittacinum' dates for your own zip code.

Growing Conditions

☀️
Sun: Full sun, 6-8 hours daily; essential for compact growth and intense flower color
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Water: Drought-tolerant once established; water moderately during growing season, then reduce significantly. Allow soil to dry between waterings. Overwatering is the primary cause of failure.
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Spacing: 12-18 inches inches
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Days to maturity: Blooms emerge in year 2-3 from seed; flowering peak reaches 3-4 years
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Planting depth: Surface sow or press seeds lightly into soil; transplant seedlings at 2-3 inches tall

Soil

Type: Well-draining, gritty, sandy or rocky soil; tolerates poor soils
pH: 6.0-8.0
Amendments:
Coarse sand or perlite for drainage Gravel or small rocks Minimal organic matter; avoid heavy compost

Growing Zones

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Thrives in zones 3-9, with peak performance in cooler alpine and high elevation areas (zones 3-7)

3a 3b 4a 4b 5a 5b 6a 6b 7a 7b 8a 8b 9a

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Growth Stages

1

Seedling

3-4 weeks

Tiny cotyledons emerge; very fragile rosettes develop fine linear foliage

Keep soil barely moist, not wet. Provide bright indirect light initially. Use well-draining seed mix with perlite. Transplant into individual pots after true leaves form.

2

Vegetative Establishment

8-12 months

Small basal rosettes form with gray-green, linear leaves arranged in tight mats

Gradually acclimate to full sun over 2-3 weeks. Water only when soil is dry. Minimal fertilizer; poor soil actually promotes better form. Ensure perfect drainage.

3

Flowering Preparation

4-6 weeks

Mats thicken and expand; flower buds develop at leaf axils in late spring to early summer

Reduce watering further as days lengthen. Full sun is critical for flower bud initiation. No deadheading needed; allow spent flowers to remain for extended visual interest.

4

Flowering

6-8 weeks

Compact umbels of brilliant parrot-red to crimson flowers appear, gradually fading to pink and rose hues; flowers held just above foliage

Maintain strict drought conditions; do not water during bloom period. Flowers may last 4-6 weeks depending on temperature. Cooler nights enhance color intensity.

5

Seed Maturation & Dormancy

8-10 weeks into winter

Flower stems dry and harden; tiny seeds develop in papery bracts; foliage remains evergreen

Allow seed heads to remain; they provide winter structure and self-seed in favorable conditions. No winter protection needed in hardy zones. Maintain dry conditions through winter.

Companion Planting

Plan your garden →

Plant with:

Sempervivum (hens and chicks) Sedum (stonecrop) Armeria (thrift) Phlox subulata (creeping phlox) Festuca glauca (blue fescue) Dianthus alpinus (alpine pink) Saxifrage Draba

Avoid planting near:

Water-loving plants (Hosta, Primula) Heavy feeders (Delphinium, Larkspur) Plants requiring consistent soil moisture Shade-tolerant species that may overshadow it

Common Pests

  • Rarely problematic in alpine conditions; spray with water or insecticidal soap if needed

  • Dry conditions favor mites; increase air circulation and avoid overhead watering

  • Prevention is key—ensure perfect drainage, do not overwater, use sandy/gritty soil mix

  • and

    Rarely significant; remove by hand or use copper tape barriers around pots

Uses

🍳

Edible Buckwheat Seeds

Culinary

The small seeds produced are technically edible and belong to the same genus as common buckwheat (Fagopyrum). Historically, native peoples used Eriogonum seeds for flour and porridge, though 'Psittacinum' is grown as ornamental. [source]

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Traditional Herbal Use

Medicinal

Eriogonum species have been used in traditional Native American medicine for respiratory and digestive support. The whole plant can be dried and steeped as tea, though efficacy varies. [source]

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Xeriscape & Rock Garden Staple

Household

Prized for water-wise landscape design and alpine gardens, reducing irrigation needs while providing season-long ornamental value. Excellent for containers, troughs, and well-drained borders. [source]

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Pollinator Support

Wildlife

The dense flower clusters attract native bees, butterflies, and other pollinators throughout its long blooming period. Seeds feed birds and small mammals in fall. [source]

🎨

Dried Flower Arrangements

Craft

Seed heads dry beautifully and retain color, making them ideal for dried floral displays, wreaths, and everlasting arrangements. [source]

This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.

Harvest Tips

This is an ornamental shrub, not typically harvested. Deadheading is optional; many gardeners leave spent flowers for structural interest. Collect seed heads in late summer if self-seeding is desired. Cut back dead stems in spring (zones 3-5) or remove only obviously dead material in warmer zones where evergreen foliage persists year-round.

Fun Facts

  • 🌱 The 'Psittacinum' cultivar name comes from 'psittacus' (Latin for parrot), referring to the brilliant parrot-like red and rose hues of the flower clusters.
  • 🌱 Buckwheats are nitrogen-fixing plants through their association with soil microbes, allowing them to thrive in poor soils where other plants would struggle.
  • 🌱 This cultivar is native to high alpine and subalpine regions of western North America and has evolved to handle extreme temperature fluctuations, intense UV exposure, and prolonged drought.

Gardening Terms

New to gardening? Learn about terms used in this guide:

Cultivar Deadhead Full Sun Transplant True Leaves
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