Green Manure Mustard (White Field)
Green Manure Mustard (White Field)
Packet Size: 4 square metres
Couldn't load pickup availability
Field Mustard is a fast and feisty green manure that gets to work quickly, suppressing weeds, adding organic matter, and giving your soil a natural lift. It’s part of the brassica family and does best in well-drained soils.
Make the most of Field Mustard
Sow from March to September. It grows fast—ready to cut and dig in after just 1 to 2 months. Chop it down before it flowers to get the most benefit, and dig it in or let it break down under cover. Avoid using it in rotation before or after other brassicas (like cabbage or broccoli).
You'll have enough seed to cover approximately 4 square metres.
Enjoy
A speedy soil improver that’s great between crops.

Collapsible content
Sowing
- Mar
- Apr
- May
- Jun
- Jul
- Aug
- Sep
Harvesting / Flowering
- May
- Jun
- Jul
- Aug
- Sep
- Oct
- Nov
Why not try one of our seed collections?
Our special offers not only introduce new varieties to your garden, but also save you money.
-
Feed Your Garden Collection
Regular price £2.95Regular priceUnit price / per£3.50Sale price £2.95Save -
Sow Now, Enjoy Later Collection
Regular price £5.30Regular priceUnit price / per£6.25Sale price £5.30Save -
Super Summer Lettuce Collection
Regular price £2.50Regular priceUnit price / per£2.95Sale price £2.50Save -
Sold outLush Late Carrot Collection
Regular price £2.30Regular priceUnit price / per£2.75Sale price £2.30Sold out -
July Taste of the East Collection
Regular price £4.50Regular priceUnit price / per£5.30Sale price £4.50Save -
SaveROCKET TRIO 2026
Regular price £1.50Regular priceUnit price / per£1.80Sale price £1.50Save