GREEN MANURE- Black Mustard 100g

Brassica nigra

BULK seed, 100g

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GREEN MANURE- Black Mustard

Brassica nigra

  • Mustard blend
  • 100g covers approximately 50 square meters

Black mustard for soil biofumigation, biomass production and deep roots to help improve soil structure. Mustard is great for attracting beneficial insects, suppressing weeds and working as a natural biofumigant for soil pathogens and nematodes. Particularly useful in controlling pathogens responsible for tomato wilt and root rot. Best sown in Spring and Autumn.

100g covers approximately 50 square meters.


How to grow:

  1. Prepare soil for sowing ; remove any weeds and cultivate well.
  2. Sow seed at a rate of 100g to 50 square metres into cultivated soil. Sowing depth: 5mm
  3. Grow until the plants are approaching flowering then cut or slash and dig into the soil to decompose.

Seeds per gram: 420
Product code: Z-0009

Quick Planting Guide
Season Spring and autumn

How To Grow

  1. Prepare soil by removing weeds and raking the surface to break up large clumps.
  2. Sow seeds by scattering them relatively thickly over soil.
  3. Rake seeds in or cover with well-rotted animal manure or compost.
  4. Dig plants in before they set seed. Mow or shred larger plants prior to digging in, and turn small plants into the ground using a garden fork.
  5. Remove any woody debris to the compost heap.
  6. Distribute the organic matter evenly through the top layer of soil so that it can quickly decompose.
  7. Allow around six weeks between digging in green manure and planting a new crop.


We deliver Australia wide.

All orders are dispatched from our warehouse in Knoxfield, Victoria, Australia.

We do not deliver overseas.

Shipping cost is calculated using all the items in your shopping cart and your delivery postcode. The table below outlines the delivery options and costs.

Order dispatch time is currently 1-3 business days plus delivery time.
Please note we are unable to guarantee specific delivery dates, the delivery timeframes below are estimates only.


Order contains: Delivery options: Delivery cost per order
Small seed packets ONLY - Economy Delivery $2.50 or FREE on orders over $20 $5
Parcel Delivery Capped rate of $6.99
Express Delivery $15.00

BULK seed, garden supplies, tools, or accessories -

Parcel Delivery

Capped rate of $6.99

Express Delivery

Starting from $15.00
(Calculated by weight)
Live Plants - Live plants Capped rate of $10.00

*All orders sent to Western Australia are subject to mandatory inspection and fees by Quarantine WA. These fees are included in all shipping costs above.

**We will replace all orders that are lost or damaged in transit however we will not replace or refund orders simply because they were delivered later than estimated. Full details here.


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