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How to Grow Purple Long Pod Bean 'Purple Queen'

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Purple Long Pod Bean 'Purple Queen'

Phaseolus vulgaris

vegetable

Purple Queen is an ornamental and edible pole bean variety featuring vibrant purple pods and purple-tinged foliage. The pods are long, slender, and tender when young, turning green when cooked. This heirloom variety combines beauty with productivity, making it ideal for gardens seeking both aesthetic appeal and culinary use.

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Example Purple Long Pod Bean 'Purple Queen' timeline · Pittsburgh, PA (Zone 6b)

  1. Plant Purple Long Pod Bean 'Purple Queen'

    Around Apr 17

    Near Pittsburgh's average last spring frost.

  2. Tend & protect

    Late spring–summer

    Watering, feeding, and pest-watch reminders.

  3. Harvest Purple Long Pod Bean 'Purple Queen'

    Around Jun 16

    ≈ 60 days after planting

Sample dates for Pittsburgh, PA. Sign up to get exact Purple Long Pod Bean 'Purple Queen' dates for your own zip code.

Growing Conditions

☀️
Sun: Full sun, 6-8 hours daily minimum
💧
Water: Keep soil consistently moist but not waterlogged; provide 1-1.5 inches per week. Water at soil level to reduce disease. Reduce watering after flowering.
📏
Spacing: 6 inches
📅
Days to maturity: 60-70 days
🌱
Planting depth: 1-1.5 inches

Soil

Type: Well-draining loamy soil with moderate fertility
pH: 6.0-7.0
Amendments:
Compost Well-rotted manure Avoid excessive nitrogen (promotes foliage over pods)

Growing Zones

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Thrives in zones 4-9; grow as annual in all zones

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

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Growth Stages

1

Germination & Seedling

2-3 weeks

Seeds sprout within 7-10 days; first true leaves appear purple-tinged. Seedlings are tender with cotyledons followed by compound leaves.

Keep soil warm (60-70°F minimum); ensure consistent moisture. Thin or transplant to proper spacing. Provide support structure early or succession plant as vines climb rapidly.

2

Vegetative Growth

3-4 weeks

Vigorous vine development with increasingly purple-tinted foliage; plant climbs support structure; no flowers yet.

Ensure sturdy support (6-8 feet tall trellis or pole); guide vines gently onto structure. Water consistently. Mulch around base to retain moisture and regulate soil temperature.

3

Flowering

2-3 weeks (ongoing, staggered)

Small purple or lavender flowers bloom along vine length; flowers appear in clusters and are self-pollinating.

Continue consistent watering and support. Do not over-fertilize or foliage will dominate flowers. Allow bees and other pollinators access.

4

Pod Development & Maturity

3-4 weeks of peak production

Purple pods develop from flower sites, elongating to 6-8 inches. Pods deepen in color and become full-length; tender snap stage occurs before pod wall thickens.

Begin harvesting at snap stage (pods fully formed but seeds not yet bulging) for best tenderness. Regular picking encourages more pod production. Support vines heavily as pod weight increases.

5

Late Season & Seed Production

2-4 weeks

If pods are left unharvested, seeds develop inside and pods mature to full ripeness (brown, papery). Plant may continue flowering until frost.

Leave mature pods on vine for 2-3 weeks to fully dry if seed saving desired. Cut dried pods from vine and shell to extract dried beans. Otherwise, harvest regularly to extend production.

Companion Planting

Plan your garden →

Plant with:

Corn Squash Pumpkin Cucumber Marigold Nasturtium Carrot Spinach Lettuce

Avoid planting near:

Onion Garlic Fennel Kohlrabi Alfalfa Other pole beans (for seed purity)

Common Pests

  • Hand-pick beetles and egg clusters; use row covers on young plants; apply neem oil if infestation is severe

  • Spray foliage with strong water stream to dislodge; increase humidity; apply insecticidal soap or neem oil if needed

  • Use strong water spray; encourage natural predators (ladybugs, lacewings); apply insecticidal soap or neem oil

  • Provide good air circulation with adequate spacing; water at soil level only; remove infected leaves; apply sulfur-based fungicide if necessary

  • Use disease-resistant seeds; avoid overhead watering; remove infected pods immediately; practice crop rotation

  • and

    Hand-pick at dusk; create barriers with diatomaceous earth; use beer traps or copper tape around supports

Uses

🍳

Fresh Snap Bean Cooking

Culinary

Purple Queen beans are excellent fresh snap beans, best harvested young and cooked whole. The purple color fades to green when cooked, but flavor remains tender and mild. They are delicious steamed, sautéed, or blanched in fresh salads and vegetable dishes. [source]

🍳

Dried Beans & Soups

Culinary

Fully mature, dried Purple Queen beans can be cooked and used in soups, stews, and bean-based dishes. When dried, they retain a slightly sweet, earthy flavor and creamy texture when cooked. [source]

🏠

Ornamental Garden Structure

Household

The striking purple pods, purple-tinged foliage, and vigorous climbing habit make Purple Queen both a productive and visually striking trellis or pergola covering. The combination of edible beauty and functional climbing makes it ideal for vertical gardening and small-space farming. [source]

💊

Nutritional & Antioxidant Content

Medicinal

Beans are rich in plant-based protein, fiber, folate, and antioxidants. The purple pigmentation indicates the presence of anthocyanins, powerful antioxidants linked to anti-inflammatory and cardiovascular health benefits. [source]

🦋

Pollinator Support

Wildlife

The purple flowers of Purple Queen beans attract bees, butterflies, and other pollinators throughout the growing season. Growing this variety supports local pollinator populations and promotes a healthy garden ecosystem. [source]

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

Harvest Tips

Harvest pods when 6-8 inches long and fully formed but before seeds bulge inside the pod (snap stage); this occurs 10-14 days after flowering. Pods are most tender and flavorful at this stage. Pick regularly every 2-3 days to encourage continuous production throughout the season. Wear gloves when harvesting to avoid bruising pods and transferring diseases. For seed saving, leave mature pods on vine until they dry and turn brown (approximately 90-100 days from planting), then shell and store in cool, dry conditions.

Fun Facts

  • 🌱 Purple Queen is an heirloom variety with deep historical roots; the purple pigmentation in beans is the same anthocyanin compound found in blueberries and red wine.
  • 🌱 Beans are nitrogen-fixing plants that form symbiotic relationships with soil bacteria, naturally enriching garden soil with nitrogen and reducing the need for synthetic fertilizers.
  • 🌱 A single Purple Queen bean plant can produce 200+ pods over a season if harvested regularly at the snap stage, making it one of the most prolific home garden vegetables.

Gardening Terms

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

Full Sun Heirloom Mulch Transplant Trellis True Leaves
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