Ammi

Ammis in Bascote

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

    1 Mar – 1 Apr

    Sow seeds thinly around 1st March - 1st April, 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

    30 Mar – 13 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 30th March - 13th April.

  3. Plant Out

    29 Apr – 13 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 29th April - 13th May.

  4. Support Plants

    6 May – 6 May

    From 6th May, 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

    20 May – 18 Oct

    From 20th May to 18th October, 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

    5 Jul – 18 Oct

    Cut stems from 5th July as soon as the flower heads open and keep picking through 18th October. 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.