Field Pennycress Seeds


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Field Penny-cress is a medium height, hairless and somewhat stocky annual with shiny, toothed leaves that clasp the stem with arrow shaped points. The flowers are white with yellow anthers but it is the subsequent seedpods that are this plants most distinctive feature. As the common name suggests these are penny shaped, flattened and broadly winged with a notch at the top, unlikely to be confused with any other British wild flower.

Field Penny-cress was introduced to Britain in pre-history. A summer annual found mainly on heavier soils it is an arable weed, particularly with broad-leaved crops and is also a frequent weed on disturbed roadsides, and in waste places and gardens.

Pretty Wild Seeds are registered with the Department for Environment, Food & Rural Affairs (DEFRA) under number 7529, so you can have confidence in both our products and advice. Although our products are listed in weights and acres, we can supply in additional quantities upon enquiry. so if you need a larger supply, please don't hesitate to give us a call.

  • 2g (approx. 400 seeds) for £2.50
  • 5g for £3.99
  • 10g for £6.99
  • 50g for £11.99
  • 100g for £19.99

    • Quantities from: £2.50




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    The Field Pennycress Seeds is shown in Wild Flowers > Wildflower Seeds.

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    We happily accept returns within 14 days from date of delivery. All returns must be received in the same condition and packaging we sent them. Postage charges will not be refunded on unwanted products.

    You are solely responsible for ensuring the goods are returned to us. We will not be liable for returns that are lost in the post or lost for any other reason. If a product arrives damaged we will advise the customer how to return the item with all return costs covered by us.  Replacements & refunds will be dispatched / issued on receipt of the returned items only.

    Can be sown any time of the year. Field penny-cress seeds buried in undisturbed soil have given 87% germination after 10 years. A small number of seeds remained viable after 30 years burial in soil. Seeds mixed with soil in the field and left undisturbed declined by 52% after 6 years but in cultivated soil the loss was 92%. Dry-stored seeds gave 80% germination after 1 year but none after 5 years.

    Viable seeds have been found in pigeon droppings and seedlings have been raised from the excreta of various birds. Apparently-viable seeds have been found in samples of cow manure. With rumen digestion there is a gradual loss of viability with time and after 24 hours the reduction may be up to 70%. However the diet can have an effect on digestion time and hence seed survival. Ensilage for 8 weeks appears to kill field penny-cress seed. The seeds are also killed by windrow composting for 2 weeks at 50-65°C. In dry heat, seed was killed when heated at 85°C for 15 minutes. 

    Seeds will float in water for 24 hrs and dispersal during irrigation is possible. 

    Management;The presence of nitrate encourages seed germination and it has been suggested that to reduce weed emergence fertiliser applications should be delayed until after crop emergence has occurred. However, this may not apply to organic systems where fertility building will have taken place earlier.

    Field penny-cress increases markedly following a series of spring cereals. Studies in oats have shown that more seeds are left on the ground after combining than if the oats are cut with a binder and threshed elsewhere. In many cereals, field penny-cress seeds mature and are shed before crop harvest. Seed germination should be encouraged by surface cultivations and the seedlings can then be controlled by further cultivations and hoeing. Field penny-cress can be hoed off readily in row crops. Seed bearing plants should not be ploughed-in.

    Laying land down to a 3 to 4 year grass ley will choke out the weed.