Purple Tansy Green Manure Annual Seeds Phacelia

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Phacelia is a quick growing hardy annual green manure that germinates at low temperatures and is ideal for sowing from March until September. It will grow up to 1m in height and is tolerant of cold temperatures and may over-winter if it's not too cold. It suits most soil types but is particularly good in dry ones. Phacelia has beautiful scented purple/blue flowers with dense fern-like foliage. It smothers weeds and has an extensive root system that improves the soil structure. However it does self-seed very easily so if it is used as a green manure dig in before flowering or cut down and compost the foliage. It flowers from 6-8 weeks from sowing for a period of 6-8 weeks.

Phacelia is listed as one of the top 20 honey-producing flowers for honeybees and is very attractive to bumblebees and hoverflies. (Hoverflies eat a lot of aphids). A small patch could be left to flower, especially near to vegetables to attract pollinating insects to the area, but don't have too many as the insects will feed on the Phacelia rather than the veg. It also makes an excellent cut flower and has a long vase-life with strong stems.


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.

  • 100g for £6.99
  • 250g for £13.99
  • 500g for £19.99
  • 1Kg for £28.99
  • 3Kg for £79.99
  • 5Kg for £124.99
  • 10Kg for £159.99
  • 20Kg for £249.99
  • Quantities from: £2.99

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    The Purple Tansy Green Manure Annual Seeds Phacelia is shown in Fertiliser, Moss & Weed Killer > Green Manure Seeds , 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.

    Germination; Sow directly. Remove weeds and rake soil. Scatter seed and cover with 10mm soil. Gently water in. Germination is rapid. Thin as required to 30cm spacing.

    Growing; Requires little attention. Will flower 6-8 weeks from sowing.

    Cultivation; Will self-seed freely, deadhead to avoid self-seeding. If using as a green manure dig in prior to flowering or cut down and compost the foliage.