Dianthus Carnation (Dianthus caryophyllus grenadin white)

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Carnation 'Grenadin White' (Dianthus caryophyllus 'Grenadin White') | $6.99 | 4-inch pot

🌿 Quick Facts: • Native Status: Non-native heirloom cultivar (species is Mediterranean) • USDA Growing Zones: 6-9 as a perennial; treat as an annual/biennial in Colorado • Height: 18-24 inches • Spread: 10-14 inches

🌺 Bloom Details: • Season: Early to mid summer, sporadic into fall • Colors: Pure white • Flower Type: Fully double, ruffled florist-style carnation on long wiry stems • Bloom Period: June-August

☀️ Growing Requirements: • Sun: Full sun; stems stretch and flop in shade • Water: Moderate • Soil: Rich, moist, well-drained, neutral to alkaline; will not survive wet winter clay • Spacing: 12-18 inches apart

🦋 Pollinator Benefits: • Birds: Little value • Native Bees: Limited — double flowers block most short-tongued bees • Butterflies: Moderate — long-tongued swallowtails and skippers can reach nectar • Beneficial Insects: Low overall; hawkmoths visit at dusk

🌱 Plant Care: • Spring: Pinch young plants to branch; stake or grid the tall stems • Summer: Water consistently but avoid overhead watering; deadhead hard for more blooms • Fall: Cut back by a third; take cuttings or resow — plants decline after year two • Winter: Light, airy mulch over the crown; sharp drainage is essential

🤝 Companion Planting: • Perfect paired with:

  • Lavender
  • Catmint
  • Yarrow
  • Sea Holly

✨ Unique Characteristics: • Heirloom Grenadin strain, in cultivation over a century • True florist-type double carnation • Long sturdy stems and excellent vase life • Crisp pure white for wedding & cutting gardens • Best treated as a short-lived, replant-often cut flower here