Phacelia tanacetifolia Seeds


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Blue Tansy (Phacelia tanacetifolia) Seeds

Phacelia tanacetifolia seeds (Blue Tansy) produces beautiful blue flowers loved by bees, butterflies and other pollinating insects. A quick growing hardy plant which is also a green manure and is good at supressing weeds. Phacelia gives good ground cover and establishes its dense foliage quickly reaching a height of up to 1 metre.. The flowers are very attractive to Bees, Butterflies, Hoverflies  and other insects as a rich source of nectar. Seed will drop from finished flowers if they are left on the plants which will regrow the following year. If you don’t want the flowers in the same place next year remove the heads as soon as possible after flowering. 4gms = Approx 1000 seeds.

Soil Type

Phacelia grows well on all soil types and can be used as ‘Green Manure’ by digging into the ground.

Sowing instructions

Sow at 2gms per sq metre from the spring (March) right through to the autumn (September). Sow the seeds by scattering thinly onto finely prepared soil then lightly cover.

Germination should be in 10-14 days given the correct climatic conditions of warmth and moisture.


The Phacelia tanacetifolia flowers are very attractive to Bees, Butterflies, Hoverflies and other insect pollinators.

Use as a Green Manure

Phacelia is used as a Green Manure by recovering Nitrogen from the soil and releasing this to be used in the next crop after incorporation into the ground. If the plants are too dense or large at the time of digging they can be cut down and the tops composted with the lower parts of the plants being dug into the ground.


Additional information

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