Thompson & Morgan

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Gomphocarpus physocarpus - Kew Collection Seeds

Swan Plant, Hairy Balls, Asclepias physocarpa

Half-hardy Shrub

A slender, deciduous shrub, often treated as an annual. Quick and easy to grow, producing stems of insignificant flowers that magically transform into unusual translucent , soft, spiny balloons. Adds fun to borders and cut flower arrangements.

Ideal For:
exotic garden, cut flower garden, specimen plant
Flowering Period:
August, September
Sowing Months:
February, March, April
Position:
full sun, sun or semi shade
    • 1 packet (30 seeds)

    •  
    • Despatch: Within 3 days
    • £1.59
Sow February to April on the surface of lightly firmed, moist seed compost in pots or trays. Lightly cover the seed with a sprinkle of fine grade vermiculite. Keep at a temperature of between 21-23C (70-75F). After sowing, do not exclude light as this helps germination. Keep the surface of the compost moist but not waterlogged; until germination which usually takes 14-21 days. When large enough to handle, transplant seedlings into 7.5cm (3in) pots or trays.

Gradually acclimatise plants to cooler conditions for a few weeks before planting out after all risk of frost 60cm (24in) apart. Pinch out the tops of plants after the fourth or fifth leaf stage to encourage the development of side shoots.

For the best results, provide a well-drained soil in full sun.

Caution: irritant to skin and eyes, harmful if eaten.

Seeds and garden supplies will normally be delivered within the time period stated against each product as detailed above. Plants, bulbs, corms, tubers, shrubs, trees, potatoes etc are delivered at the appropriate time for planting and will be stated on the product page or in your order acknowledgement page and email.


Orders for packets of seed incur a P&P charge of £1.95.
Orders which include any other products will incur a P&P charge of £4.95.
Where an order includes both packets of seeds and other products a maximum P&P charge of £6.90 will apply - regardless of the number of items ordered.


Please see our Delivery / P&P page for further details and details of any surcharges that may apply to certain destinations.

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