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Kew Pollination Collection Ammi majus Seeds


Ammi majus, commonly known as Bishop's Weed or Bullwort, is reminiscent of cow parsley which softens the verges of country lanes in late spring. The plants produce a froth of delicate white blooms that bring a simple, elegant feel to summer borders. It's what gardeners call a 'filler'. Its graceful stems rise above apple-green, ferny foliage, lending themselves nicely to summer bouquets.

Ammi majus associates beautifully with tall grasses and summer perennials, mingling happily to soften planting schemes and create a hazy, romantic appearance. Its blooms are loved by pollinating insects, and the autumn seed heads attract finches to the garden.

  • Sow from April to June in full sun or semi-shade
  • Height: 140cm; spread: 50cm
  • 1 packet contains approximately 100 seeds
  • Makes a fantastic cut flower

I aim to pick and pack your order within 24 hours of receipt and you should expect your parcel to arrive within 3–5 working days under normal circumstances. Orders placed on a Friday may not be sent until the following Monday. All delivery charges are calculated and displayed at the checkout.

  • If your order can safely be sent in an envelope or small parcel, it will be sent by Royal Mail via a tracked service for £3.50. This doesn't require a signature but does let you know where your parcel is.
  • Larger orders will be sent either with Royal Mail or FedEx for £4.95. Tracking details will be sent via SMS and/or email, if these contacts are provided.
  • Large or heavy items will be sent for £10 via FedEx or an equivalent courier with tracking provided.
  • For deliveries to Northern Ireland, the Isle of Man, Channel Islands and international addresses, please drop me a line at letting me know where you are in the world and what you'd like to purchase. I will check the items are allowed to be shipped to your location and get a cost for your approval.

Should you need to return an item, drop me a line at within 14 days of receiving your purchase, providing your name, order number and the reason for your return. I will let you know how to return your item.

Please visit my Delivery & Returns page for more detailed information.

Direct sow Ammi majus seeds outdoors where they are to grow from April to June. Sow in full sun or semi-shade, on fertile, well-drained soil which has been raked to a fine tilth. Sow seeds thinly, at a depth of 1.5mm in drills spaced 30cm apart. Water the ground regularly, especially during dry periods. Germination usually takes 7-21 days. When the seedlings are large enough to handle, thin them out to 25cm apart.

Water regularly until plants become fully established. Ammi stems will require staking. Place twiggy sticks among the seedlings when they are 10cm high and allow the plants to grow through them for support.

Cut flowers early in the morning or late in the evening and plunge them straight into a bucket of cold water to keep them fresh and perky.

For more help and advice on growing plants from seed, read my handy guide.


A great many of our favourite garden plants can be harmful if eaten or handled without gloves. This is rarely a cause for concern but it's always good to know what you are dealing with.

Ammi majus may cause skin irritation and other allergic reactions. It can also be toxic to cats, dogs and horses.

Brand Focus

Thompson & Morgan

With over 160 years of experience, seed merchants Thompson & Morgan know a thing or two about plants and flowers. They are often the first to introduce gardeners to exciting new varieties.

The Kew Pollinators range of seeds has been specially created alongside experts at Royal Botanic Gardens, Kew to attract and support a wide range of pollinators, including bees, butterflies and beetles. Helping these pollinators to thrive is hugely important for our natural eco-systems as well as the health and productivity of our gardens. The seeds, in their striking packaging inspired by artwork from the Kew archives, will help to create an environment where pollinators thrive, with varieties chosen to help a wide range of different insects.

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Thompson & Morgan

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