Ammis in Forder

Ammi majus

Ammi
Ammi · Ammi majus

A hardy annual grown in the UK for airy white flowers and good cutting stems. Sow in spring for a summer display in borders and cutting patches, or try an autumn sowing in mild areas for stronger plants.

90 cm · Full Sun · Moderate Water

Calibrated to Forder · last frost ≈ 6 Apr

Sow February to March, plant out April to May, harvest June to November. Frost risk November to April.
ActivityJanuaryFebruaryMarchAprilMayJuneJulyAugustSeptemberOctoberNovemberDecember
SowNoYesYesNoNoNoNoNoNoNoNoNo
Plant outNoNoNoYesYesNoNoNoNoNoNoNo
HarvestNoNoNoNoNoYesYesYesYesYesYesNo

Growing guide

Step-by-step instructions for growing Ammi

  1. 01

    Sow Seeds

    20 Feb to 23 Mar

    Sow seeds thinly around 20th February - 23rd March, just under deep in prepared soil. Keep the surface evenly moist while the seedlings establish, and protect early sowings from birds and slugs.

  2. 02

    Thin Seedlings

    21 Mar to 4 Apr

    When seedlings are large enough to handle, thin them to apart so each plant has room to branch. Keep the strongest plants and remove the weaker ones cleanly around 21st March - 4th April.

  3. 03

    Plant Out

    20 Apr to 4 May

    Set young plants into their final position once they are sturdy, spacing them apart. Water in thoroughly straight after planting, then use fleece if a cold snap is forecast around 20th April - 4th May.

  4. 04

    Support Plants

    27 Apr to 27 Apr

    From 27th April, add light stakes or mesh if the plants start to lean. Ammi can flop in exposed spots after rain, so put support in early rather than waiting for stems to bend.

  5. 05

    Water and Feed

    11 May to 19 Nov

    From 11th May to 19th November, water during dry spells and give a light balanced liquid feed once at the start of flowering if the soil is poor. Avoid overfeeding, as soft growth makes stems weak and floppy.

  6. 06

    Cut Flowers

    26 Jun to 19 Nov

    Cut stems from 26th June as soon as the flower heads open and keep picking through 19th November. Regular cutting encourages more stems, and the flowers last best if you cut early in the day and put them straight into water.

Companion plants

Tap a plant to see why it works (or doesn't) with Ammi.

Good companions

Plants to avoid

Why companion planting matters

Companion planting can deter pests, improve pollination, and make better use of space. Some plants confuse pests or attract beneficial insects; others improve soil or offer shade to neighbours that need it.

Ammi guides by town

See how Ammi timing shifts in other towns with different frost dates.