Cornflower Black & Mauve Mix
Couldn't load pickup availability
Description
Cornflower 'Black & Mauve Mix' Seeds
Why choose between drama and romance when you can have both? This curated mix blends two of our favourite varieties: the deep, velvet-chocolate 'Black Ball' and the soft, dusty lilac 'Mauve Boy'. Together, they create a stunning, vintage-style display that looks like it has been lifted straight from a Dutch oil painting. The dark maroon adds depth and drama, while the mauve adds a soft, antique glow that prevents the overall effect from feeling too heavy.
Growing tall on sturdy silver-green stems with feathery foliage, this mix is essentially a ready-made bouquet. Simply cut a handful of stems, drop them in a vase, and you have an instant designer arrangement that looks impossibly elegant. Both varieties are double-flowered "Ball" types with ruffled petals that are far fuller than wild cornflowers, creating substantial blooms that last beautifully in the vase. Beloved by bees and butterflies, incredibly easy to grow, and producing buckets of cut flowers all summer long—this is cottage gardening at its most effortlessly beautiful.
Read More
🌿 Understanding the Plant
Centaurea cyanus 'Black & Mauve Mix' is a robust Hardy Annual (H7). As a selected blend of the British native wildflower, it is perfectly adapted to the UK climate, surviving temperatures as low as -20°C. It is a "cool-season" specialist, meaning it establishes its best root systems when the soil is cool in either spring or autumn.
The "Autumn Secret": While many gardeners sow Cornflowers in spring, the secret to the most floriferous plants is September sowing. Autumn-sown plants in this mix develop deep, resilient root systems over winter and burst into bloom weeks earlier than spring-sown counterparts, resulting in bushier, taller, and more architectural specimens.
A Bee's Favorite: Cornflowers are a superstar species for biodiversity. Both the 'Black Ball' and 'Mauve Boy' components are rich in high-quality nectar, serving as a magnet for bees, butterflies, and hoverflies from mid-summer until the very first autumn frosts.
🌱 Growing Guide
Cornflowers are among the easiest plants to raise from seed, providing high reward for minimal effort.
How to Sow:
Direct sow outdoors in September for early summer blooms, or in March to May for a continuous mid-to-late summer display. Cornflowers possess a deep taproot and hate being moved; for this reason, direct sowing into their final position is always the most successful method. Scatter the seeds onto finely raked soil and cover very lightly (just 3mm deep). Germination typically occurs within 14-21 days.
Where to Plant:
They demand full sun and prefer well-drained soil. Paradoxically, Cornflowers perform better in poor, "hungry" soils. Over-feeding or planting in rich ground will lead to excessive leafy growth and weak stems. Sandy or chalky soils are ideal for producing the sturdy, upright plants required for cutting.
Ongoing Care:
As this mix reaches heights of 90cm, we recommend providing light twiggy support (hazel or birch) early in the season to prevent the plants from flopping after heavy rain. Deadheading spent flower heads weekly—or cutting them for the vase—is essential to stimulate the plant into producing fresh buds; if left to set seed, the plant will stop flowering early.
📋 Plant Specifications
| Botanical Name | Centaurea cyanus 'Black & Mauve Mix' |
| Common Name | Vintage Blend Cornflower |
| Plant Type | Hardy Annual |
| Hardiness | H7 (Ultra Hardy) |
| Light Requirements | Full Sun ☀️ |
| Height | 75cm - 90cm |
| Spread | 30cm |
| Spacing | Plant 30cm apart |
| Flowering Period | June to September |
| Perfect For | ✂️ Professional Cut Flowers 🎨 Dutch Master & Antique Palettes 🐝 Bee & Butterfly Support 🥗 Gourmet Edible Garnishes |
| Seeds per Packet | Approximately 200 seeds |
🤝 Beautiful Garden Combinations
This dark and moody mix acts as its own ready-made palette, but it works spectacularly with Available partners from our range:
- ☁️ Ammi majus: The Classic Contrast. The lacy white umbels of Ammi majus (Bishop's Flower) provide a soft, luminous backdrop that allows the deep, velvety tones of the cornflowers to pop. This is a quintessential florist's pairing, creating a professional-looking "wild meadow" display in both the garden and the vase.
- 🕊️ Nigella 'Miss Jekyll White': The Texture Match. The pure snowy white blooms of this Nigella sit nestled in a haze of fine, feathery foliage. Together with the 'Black & Mauve Mix', they create a dreamy, sophisticated aesthetic that looks like dark jewels threaded through a low-hanging summer cloud.
📅 Sowing & Flowering Calendar
Direct sow in autumn for the strongest plants, or in spring for successional waves of moody, double blooms through the summer.
🐝 Wildlife Champion
Cornflowers are a superstar plant for biodiversity. As an RHS Plant for Pollinators, this mix produces high-quality, easily accessible nectar that attracts a vast array of British bees, butterflies, and hoverflies.
🏆 Robust Garden Stamina
Known for its stamina and ability to thrive on poor, sandy, or chalky soils, Centaurea cyanus 'Black & Mauve Mix' is an essential choice for those wanting to create a romantic, low-maintenance garden with a professional-grade vintage finish.
📖 Want more detailed growing advice?
View our Complete Growing Guide for Annuals →
Delivery & Returns
Delivery:
Delivery to mainland UK is calculated at checkout. For all other areas and large orders please ask for a quote. Orders will be sent by express next day delivery (DPD). They will be dispatched on a next working day service, with the exception of Ireland where it may take two days. Please allow up to 48 hours for delivery in the UK as the couriers may have already been and collected on the day you send your order in. Smaller orders for pouches, pockets, bags and pots may be sent via Royal Mail delivery. Please ensure you supply an email address and a mobile so you can be updated about your delivery. Should you have any problems with your delivery, please contact us at sales@naturalgrower.co.uk.Special Deliveries
Saturday or weekday morning deliveries can be arranged, but there will be a surcharge. Please contact us to request a price for either of these delivery services. If you need a parcel sending outside of the UK, please contact us for a quote.Returns:
If you are not completely happy with any product that you have ordered from us, you may return it to us in its original condition any time within 14 calendar days from the date of dispatch. Products must be returned in their original condition. Please contact us at sales@naturalgrower.co.uk to arrange a return. If you return a product by post, you will need to pay the costs of returning the product to us and obtain proof of posting.
Be a smarter gardener
Gardening organically is a more affordable and long term alternative to using chemical fertilisers. Natural Grower products eliminate waste because the nutrients are slowly released to the plants as they need them. Over the long-term you save money because your soil health naturally improves, which in turn produces healthier, stronger, disease resistant plants. Chemical products may cost less financially in the short term, but they don’t provide any long-term benefits and the damage they do to the natural eco-system in the soil is costly.
Slow release for sustained growth
Organic fertilisers are broken down slowly by organisms in the soil to produce a more measured, consistent, natural release of nutrients. This results in uniform growth with strong stems and leaves, unlike chemical fertilisers which provide a sudden boost resulting in tall lanky plants. Stronger plants are more resistant to disease, and with the presence of mycorrizhal fungi to strengthen the roots, the plants, soil and fungi all work together long-term to create the perfect natural eco-system.
Love your land
The organic matter in Natural Grower will help keep your soil or compost in optimum condition, retain moisture over the dry summer months and improve the health and structure of your soil. The presence of natural Mycorrhizal fungi in our products enhances root growth, enabling plants to extract nutrients and absorb water more efficiently from the soil or compost. By using our products you will be supporting and enhancing the natural eco-system in the soil.
Embrace sustainability
Natural Grower’s chemical free fertiliser products are approved organic, biodynamic and vegan. Plant-based and free from chemicals they are safe to use around wildlife, pets and children. Eco-friendly and sustainably produced in the UK. Our packaging is made from recycled plastic where possible and is all 100% recyclable. We are always happy to refill used containers, and often sell our products in reused containers or slightly damaged packaging at a reduced price. Reduce, reuse, recycle.
