When to plant Ammi in the UK

Ammi majus

Ammi
Ammi · Ammi majus

A hardy annual grown in the UK for airy white flowers and good cutting stems. Sow direct. The sap can irritate skin in sun. Wear gloves.

90 cm · Full Sun · Moderate Water

Add to garden
Sow outdoors March to April, harvest June to October.
ActivityJanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecember
Sow outdoorsNoNoYesYesNoNoNoNoNoNoNoNo
HarvestNoNoNoNoNoYesYesYesYesYesNoNo

UK averages · set your town for dates worked out from your local frost records · how dates are worked out

Growing guide

What to do through the growing season

Dates for your town

Set your town to see planting windows worked out from local frost history, not a generic UK calendar.

Growing guide for the UK

Change the guide to see different planting timelines and tips.

Sow direct in spring for a reliable display. This is the easiest UK method.

  1. 01

    Sow Seeds

    mid-March to mid-April UK average · set your town for your exact dates

    Sow thinly around mid-March to mid-April, just under deep in prepared soil. Keep the surface evenly moist while the seedlings establish. Protect early sowings from birds and slugs.

    • The sap can irritate skin in sun. Wear gloves.
    • Leave seedlings where they are. The taproot dislikes being moved.

  2. 02

    Thin Seedlings

    early April to mid-May UK average · set your town for your exact dates Dates as each sowing reaches this stage

    When seedlings are large enough to handle, thin to . Keep the strongest plants. Remove the weaker ones cleanly around early April to mid-May.

  3. 04

    Support Plants

    late April to late June UK average · set your town for your exact dates Dates as each sowing reaches this stage

    From late April, put light stakes or mesh in before the plants start to lean. Add support early rather than waiting for stems to bend.

  4. 05

    Water and Feed

    early April to late October UK average · set your town for your exact dates Dates as each sowing reaches this stage

    From early April to late October, water during dry spells. If the soil is poor, give one light balanced feed as flowering begins. Avoid overfeeding.

  5. 06

    Cut Flowers

    late June to late October UK average · set your town for your exact dates Dates as each sowing reaches this stage

    Cut stems from late June as soon as the flower heads open. Keep picking through late October. Cut early in the day and put them straight into water.

Suggested varieties

Popular varieties of Ammi to consider

Graceland

A reliable Ammi majus with large, white, lace-like umbels on tall, sturdy stems. It is vigorous and copes well with UK's cool summers, making it a top choice for cutting and borders.

Casablanca

A compact, early-flowering Ammi majus that stays shorter than most, so it suits smaller gardens and windy spots. The clean white flowers appear for weeks and are excellent for picking.

Green Mist

This Ammi visnaga variety produces soft green umbels that add a frothy, airy texture to beds and bouquets. It is tough, self-seeds readily, and handles damp British summers without flopping.

Snowflake

A fine-textured Ammi majus with delicate foliage and abundant white blooms. It is slightly more compact and bushy than 'Graceland', making it a good middle-of-border filler that stands up well to rain.