Ammi

Ammis in Beaumont Leys

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.

Height90cm
SunlightFull Sun
WaterModerate Water

Growing Guide

Step-by-step instructions for growing Ammi

Planting Calendar

Seed DirectLater
J
F
M
A
M
J
J
A
S
O
N
D
TransplantLater
J
F
M
A
M
J
J
A
S
O
N
D
FertiliseNow
J
F
M
A
M
J
J
A
S
O
N
D
HarvestNow
J
F
M
A
M
J
J
A
S
O
N
D
MaintenanceLater
J
F
M
A
M
J
J
A
S
O
N
D
  1. Sow Seeds

    22 Feb – 25 Mar

    Sow seeds thinly around 22nd February - 25th 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. Thin Seedlings

    23 Mar – 6 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 23rd March - 6th April.

  3. Plant Out

    22 Apr – 6 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 22nd April - 6th May.

  4. Support Plants

    29 Apr – 29 Apr

    From 29th 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. Water and Feed

    13 May – 5 Nov

    From 13th May to 5th 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. Cut Flowers

    28 Jun – 5 Nov

    Cut stems from 28th June as soon as the flower heads open and keep picking through 5th 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.

Also in nearby towns

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