Ammi

Ammis in Washaway

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 Jan – 22 Feb

    Sow seeds thinly around 22nd January - 22nd February, 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

    20 Feb – 6 Mar

    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 20th February - 6th March.

  3. Plant Out

    22 Mar – 5 Apr

    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 March - 5th April.

  4. Support Plants

    29 Mar – 29 Mar

    From 29th March, 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

    12 Apr – 25 Nov

    From 12th April to 25th 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 May – 25 Nov

    Cut stems from 28th May as soon as the flower heads open and keep picking through 25th 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.