How to Grow Stock Flower
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Stock Flower
Matthiola incana
flowerStock flowers are fragrant, upright flowering plants prized for their dense spikes of blooms in white, pink, red, purple, and yellow. They are classic cut flowers and garden ornamentals known for their sweet, clove-like fragrance and long vase life. These cool-season annuals or biennials produce multiple flower stalks from a single plant.
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Example Stock Flower timeline · Pittsburgh, PA (Zone 6b)
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Plant Stock Flower
Around Apr 17Near Pittsburgh's average last spring frost.
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Tend & protect
Late spring–summerWatering, feeding, and pest-watch reminders.
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First Stock Flower blooms
Around Jun 16≈ 60 days after planting
Sample dates for Pittsburgh, PA. Sign up to get exact Stock Flower dates for your own zip code.
Growing Conditions
Soil
Growing Zones
Find your zone →Thrives in zones 2-9; prefers cool climates and performs best in spring and fall
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Seedling
2-3 weeksTiny seedlings emerge with two cotyledons (seed leaves) and develop their first true leaves within 1-2 weeks
Keep soil consistently moist. Maintain temperatures around 60-65°F. Provide bright, indirect light. Thin seedlings to proper spacing if direct sown.
Vegetative Growth
4-6 weeksPlant develops a sturdy main stem with side shoots and foliage. Leaves are grayish-green and elongated. Plant reaches 12-24 inches tall depending on variety.
Maintain cool temperatures (60-70°F ideal). Water consistently. Apply balanced fertilizer every 2-3 weeks. Pinch center stem early for bushier plants with more flower spikes.
Bud Formation
2-3 weeksFlower buds appear as a dense cluster at the top of each stem. Buds are tightly packed along the main spike.
Continue consistent watering and feeding. Ensure good air circulation to prevent mildew. Support tall varieties with stakes if needed. Maintain cool temperatures.
Flowering
4-8 weeksFlowers open sequentially from bottom to top along the spike, creating a long flowering period. Individual flowers are 0.5-1 inch across and densely clustered.
Continue watering at soil level. Deadhead spent flowers to encourage continued blooming. Remove individual flowers for cut arrangements. Maintain cool conditions for longer bloom.
Seed Production & Decline
2-4 weeksIf not deadheaded, plant forms seed pods and gradually senesces. Foliage may yellow and decline in hot weather.
Allow some flowers to remain for seed collection if desired. In hot climates, stocks decline; grow as spring or fall crop instead. Pull plants when finished flowering.
Companion Planting
Plan your garden →Plant with:
Avoid planting near:
Common Pests
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Hand-pick caterpillars; use floating row covers; apply Bacillus thuringiensis (Bt) if infestation is severe
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Use row covers on seedlings; spray with neem oil or spinosad; maintain plant vigor with consistent watering
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Improve air circulation; avoid overhead watering; apply sulfur dust or fungicide spray; remove infected leaves
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Provide good drainage; improve air circulation; apply copper fungicide; remove infected plant material
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Use yellow sticky traps; spray with insecticidal soap; maintain good air circulation; remove heavily infested plants
Uses
Edible Flowers & Culinary Decoration
CulinaryStock flowers are ornamental and can be used as garnish for cakes, salads, and desserts. Individual florets add color and a subtle fragrance to special dishes, though they are primarily used for visual appeal rather than flavor. [source]
Cut Flower Arrangements & Floral Design
HouseholdStocks are classic cut flowers valued for their long vase life, vertical growth habit, and sweet fragrance. They are industry staples in floral design, wedding bouquets, and florist arrangements due to their elegance and availability in multiple colors. [source]
Dried Flower Crafts
CraftStocks can be dried by hanging upside down in a warm, well-ventilated area for 2-3 weeks. Dried flowers retain their color and form well, making them ideal for dried arrangements, wreaths, pressed flower crafts, and preserved bouquets. [source]
Pollinator Attraction
WildlifeThe fragrant, nectar-rich flowers attract bees, butterflies, and other pollinators to the garden. Stocks provide an early spring and fall food source when other flowers are scarce, supporting beneficial insect populations. [source]
Fragrance & Aromatics
MedicinalStock flowers are renowned for their sweet, clove-like fragrance that has made them popular in perfumery and fragrance industries for centuries. The essential oil compounds contribute to their characteristic scent used in traditional and modern cosmetics. [source]
This is not medical advice. LizPlants is not a medical resource. Always consult a qualified healthcare professional before using plants medicinally.
Harvest Tips
Cut flowers in early morning when stems are turgid and blooms are just opening or in the bud stage. Harvest when 50-75% of the flowers on the spike are open for longest vase life. Cut stems at a 45-degree angle and immediately place in cool water with flower food. Remove lower leaves that would sit below the waterline. Stocks can last 10-14 days in a vase with proper care.
Fun Facts
- 🌱 Stock flowers have been cultivated since the 15th century and were treasured in European gardens for their exquisite fragrance; their Latin name Matthiola honors Pierandrea Mattioli, a 16th-century Italian botanist.
- 🌱 Double-flowered varieties (with many layers of petals) can be identified at the seedling stage by observing cotyledon characteristics—double flowers have seedlings with unequal-sized cotyledons, a useful selection method for growers.
- 🌱 Stocks are cool-season crops that actually thrive in spring and fall; in hot climates they often bolt and decline in summer, making them best grown as winter annuals in warm regions.
Gardening Terms
New to gardening? Learn about terms used in this guide:
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