Centaurea cyanus 'Black Ball' (cornflower)

We ship in-stock products within 1 - 2 business days.

+ View shipping rates by country.

Free shipping on orders over 150 euros in Europe.

We try to produce as sustainably as possible to keep our footprint small. Therefore, our letterbox boxes are made of grass paper and tomato leaf pulp is the basic component of the seed bags. The printing is either made of paper that is 30-70% recycled paper or paper that comes from agricultural waste. In addition, you have the option to plant a tree when you place an order through Regreener.

Is (part of) your order a gift for someone? Mention it in the comments and we will wrap it nicely for you.

The terms may be new to you, here's what they all mean:

Annual- plants that bloom one summer and then die
Biennial- plants that you sow one year, and bloom the next year (and then die)
Perennial- plants that bloom several summers
Perennial- plants that survive frost and last for years

Annuals plants almost without exception grow only in full sun. That means that you preferably need more than 8 hours of summer sun in the place where you want to grow them, for example from 10 - 18 hours. 6 - 7 hours will also go a long way, but the plants will grow just a little slower.

Unless otherwise specified, annuals want nutrient-rich soil with extra compost in the spring. Read more about it in the Seed Guide.

Never seeded before? We'll get you started with a Sowing Guide explaining the basics and supplies.

On the package of your seeds you will find the shelf life. You can use them until the date you see on it. An opened package is best stored in an airtight box in a cool and dark place, such as a closet in the hallway. Not sure if the germination is still good? Then it's best to buy a new pack. We deliberately choose small amounts of seeds in the packs so you don't have to waste seeds. Do you have any questions about this? Call 033 - 202 43 38 or email to [email protected], and we will help you further.