Matthiola incana vs. Matthiola longipetala: Which Stock Should You Grow?
If you've ever browsed stock flower seeds and wondered what the difference is between Matthiola incana and Matthiola longipetala, you're not alone. Both are called "stock," both are beloved for their intense fragrance, and both produce stunning blooms — but they are genuinely different plants with different strengths, different growing habits, and different ideal uses.
This guide breaks down everything you need to know so you can choose the right stock for your garden, your cut flower operation, or your farmers market table.
What Is Matthiola incana?
Matthiola incana is the classic florist's stock — the one you see in professional cut flower arrangements, wedding bouquets, and high-end floral design. It produces tall, upright spikes densely packed with double or single flowers in shades of white, pink, rose, lavender, purple, apricot, and crimson.
This is the species behind the most popular commercial stock varieties, including the Iron Series and Column Series. Plants typically grow 18 to 36 inches tall depending on the variety, making them ideal for cutting. The flowers are held on long, sturdy stems that hold up beautifully in a vase.
Fragrance is one of Matthiola incana's greatest assets. The scent is sweet, spicy, and clove-like — one of the most distinctive and beloved fragrances in the flower world. A single bunch in a room will perfume the entire space.
Matthiola incana is a cool-season annual (or biennial in mild climates). It performs best when daytime temperatures stay between 45°F and 65°F. It is frost tolerant and can handle light freezes, making it an excellent choice for early spring and fall planting in most regions, or winter growing in mild climates like the Pacific Coast and the Deep South.
If you're growing for cut flowers, farmers markets, or floral design, Matthiola incana is almost certainly the stock you want. Explore our Matthiola Iron Rose Stock Seeds and Matthiola Iron White Stock Seeds — two of the most reliable and beautiful incana varieties available.
What Is Matthiola longipetala?
Matthiola longipetala — commonly called evening stock, night-scented stock, or perfume stock — is a very different plant. Where incana is grown primarily for its visual impact, longipetala is grown almost entirely for its extraordinary fragrance.
The flowers of Matthiola longipetala are small, four-petaled, and relatively modest in appearance. They come in shades of pale lilac, pink, and white. During the day, the flowers often close or look somewhat unremarkable. But as evening falls, they open fully and release one of the most powerful and intoxicating fragrances in the plant kingdom — a rich, sweet, almost honeyed scent that carries far on the night air.
This is a plant for sensory gardens, cottage gardens, patio containers, and anywhere you want to enjoy the garden in the evening. It is not a cut flower crop. The stems are thin and branching, the flowers are small, and the plant has a somewhat sprawling habit that doesn't lend itself to bouquet work.
Matthiola longipetala is also a cool-season annual, but it is generally considered easier and faster to grow than incana. It can be direct sown in the garden and will bloom relatively quickly from seed. It is a wonderful companion plant for other evening-blooming or fragrant plants like nicotiana, moonflowers, and four o'clocks.Â
Key Differences at a GlanceÂ
Understanding the core differences between these two species helps you make the right choice for your goals:
Matthiola incana produces tall, upright spikes with large, densely packed double or single flowers. It is the premier cut flower stock, with long vase life and exceptional fragrance. It requires cool temperatures and performs best with some indoor seed starting. It is the commercial florist's choice and the backbone of the stock seed market.
Matthiola longipetala produces small, modest flowers on branching stems. Its fragrance is extraordinary — arguably stronger than incana — but it releases primarily in the evening. It is easy to direct sow, grows quickly, and is best suited to ornamental garden use rather than cutting. It is the gardener's choice for sensory and cottage garden plantings.
Which One Should You Grow?
The answer depends entirely on your goals.
Grow Matthiola incana if: You want cut flowers for bouquets, arrangements, or farmers market sales. You want long-stemmed, visually stunning blooms. You want a plant that performs like a professional florist crop. You want reliable, predictable results from named varieties with known characteristics.
Grow Matthiola longipetala if: You want maximum fragrance in your garden, especially in the evening. You want an easy, fast-growing annual you can direct sow. You're planting a sensory garden, cottage garden, or patio container. You want to attract pollinators and enjoy the garden after dark.
Many experienced gardeners grow both — incana for the cutting garden and longipetala tucked along pathways, near seating areas, or under windows where its evening fragrance can be fully appreciated.
Growing Tips for Matthiola incana
Because Matthiola incana is the more commonly grown of the two for serious gardeners and flower farmers, here are the key growing tips to maximize your success:
Start seeds indoors 6 to 8 weeks before your last frost date. Stock seeds germinate best at cool temperatures — around 60°F to 65°F. Avoid high germination temperatures, which can inhibit sprouting. Keep the growing medium evenly moist but not waterlogged.
Provide light immediately after germination. Seedlings need bright light to develop strong stems. Leggy seedlings are a common problem when light is insufficient.
Transplant outdoors early. Stock is frost tolerant and actually benefits from cool outdoor temperatures. Transplant 4 to 6 weeks before your last frost date. Hardening off is important — gradually acclimate seedlings to outdoor conditions over 7 to 10 days.
Plant in full sun with excellent drainage. Stock does not tolerate wet feet. Well-drained, fertile soil with a slightly alkaline pH produces the best results.
Succession plant for continuous harvest. Because stock has a relatively short harvest window, succession planting every 2 to 3 weeks extends your cutting season significantly. For more advanced production strategies, see our Advanced Guide to Growing Stock Seeds for Cut Flowers.
Growing Tips for Matthiola longipetala
Matthiola longipetala is considerably easier to grow and requires less planning:
Direct sow in early spring or fall. Scatter seeds where you want them to grow and lightly rake them in. They germinate quickly in cool soil and require minimal intervention.
Thin seedlings to 6 to 9 inches apart. Good air circulation reduces disease pressure and allows plants to branch freely.
Plant near seating areas, pathways, or open windows. The whole point of longipetala is the evening fragrance — position it where you'll actually experience it.
Deadhead regularly. Removing spent flowers encourages continued blooming and extends the season.
Fragrance: Which Is More Fragrant?
This is one of the most common questions about these two species, and the honest answer is: it depends on when you're asking.
During the day, Matthiola incana is clearly more fragrant. Its large flowers release their sweet, clove-like scent continuously throughout the day, and a bunch of cut stock in a vase will perfume a room for days.
In the evening, Matthiola longipetala can be overwhelming in the best possible way. Its fragrance intensifies dramatically at dusk and carries on the night air in a way that incana simply doesn't match. If you've ever walked past a planting of evening stock on a warm summer night, you'll never forget it.
For cut flower use, incana wins on fragrance simply because it's the one you'll actually be cutting and bringing indoors. For garden fragrance — especially evening garden fragrance — longipetala is in a class of its own.
Vase Life and Cut Flower Performance
Matthiola incana is an excellent cut flower with a vase life of 7 to 14 days when properly conditioned. Cut stems when the bottom third of the spike has opened, place immediately in cool water with a floral preservative, and store in a cool location. The fragrance continues in the vase, making it one of the most sensory-rich cut flowers available.
Matthiola longipetala is not suitable for cutting. The stems are too thin and branching, the flowers are too small, and the plant simply doesn't perform as a cut flower. It belongs in the garden, not the vase.
For a deeper look at getting the most from your stock harvest, visit our guide to Matthiola Stock as an Elegant Cut Flower.
Best Varieties of Matthiola incana to Grow
If you've decided Matthiola incana is the right choice for your garden or flower farm, here are some of the best series to consider:
The Iron Series is the gold standard for commercial cut flower production. Iron Series stock is bred for uniformity, long stems, and high double-flower rates. Colors include white, rose, rose pink, blue, purple, apricot, and cherry blossom. Our Matthiola Iron Rose Pink Stock Seeds and Matthiola Iron Blue Stock Seeds are perennial bestsellers with florists and home gardeners alike.
The Column Series produces single-stemmed plants ideal for tight spacing and high-density production. Column stock is excellent for farmers markets and floral design work where uniform stem length is important.
The Chanter Series offers excellent branching and a wide color range, making it a versatile choice for mixed bouquets and garden cutting beds.
For the full range of stock varieties available, visit our Bulk Seeds Site for larger quantity options.
Frequently Asked Questions
Is Matthiola incana the same as common stock?
Yes. Matthiola incana is the botanical name for common stock, also called hoary stock or gillyflower. It is the species behind virtually all commercial stock flower varieties sold for cut flower production and garden use.
Can I grow Matthiola longipetala as a cut flower?
It is not recommended. Matthiola longipetala (evening stock or night-scented stock) has thin stems, small flowers, and a branching habit that makes it unsuitable for cutting. It is best enjoyed in the garden where its extraordinary evening fragrance can be appreciated.
Which stock is easier to grow from seed?
Matthiola longipetala is considerably easier. It can be direct sown in the garden and germinates quickly with minimal fuss. Matthiola incana benefits from indoor seed starting, careful temperature management during germination, and early transplanting — but the results are well worth the extra effort.
Do both types of stock need cool weather?
Yes. Both Matthiola incana and Matthiola longipetala are cool-season plants that perform best when temperatures remain below 70°F. Both will decline in summer heat. Plan your planting schedule accordingly — early spring, fall, or winter in mild climates.
How long does stock take to bloom from seed?
Matthiola incana typically takes 10 to 14 weeks from seed to first bloom, depending on the variety and growing conditions. Matthiola longipetala is faster, often blooming in 6 to 8 weeks from direct sowing.
Can I grow stock in containers?
Yes, both species can be grown in containers. Matthiola incana does well in large, deep containers with excellent drainage. Matthiola longipetala is particularly well suited to patio containers placed near seating areas where its evening fragrance can be enjoyed up close.
What is the difference between single and double stock flowers?
Double-flowered stock (Matthiola incana) produces densely packed blooms with multiple layers of petals and is highly prized for cut flower work. Single-flowered stock has simpler, four-petaled blooms. Most commercial varieties are bred for high double-flower rates. Matthiola longipetala always produces single flowers.
Final Thoughts
Both Matthiola incana and Matthiola longipetala deserve a place in the garden of any serious flower grower or fragrance lover. They are different plants with different strengths, and understanding those differences is the key to getting the most from each one.
If you're building a cutting garden or growing for market, Matthiola incana is your plant. If you want to transform your evening garden into a fragrant sanctuary, Matthiola longipetala is the one to reach for. And if you have the space — grow both.
For more on growing stock and other premium cut flowers from seed, explore our guide to the Best Fragrant Cut Flowers to Grow from Seed.
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