Cynara cardunculus (Cardoon) seeds
Height: 120-180cm, Spread: 100cm
Packet of 25 seeds
Sowing Instructions: Sow at any time of year, except early to mid-summer. Sow 3mm deep in a moist, free-draining seed compost and propagate at 18 to 20C in a propagator, greenhouse or on a windowsill indoors sealed in a polythene bag. Germination should take place in 14-30 days. As the seedlings begin to emerge, very gradually increase ventilation by opening the propagator vents or the bag.
Growing Instructions: When the seedlings are large enough to handle, pot up individually into small pots (7-9cm) and grow on in well-ventilated conditions at about 13 to 15C. Overwinter if necessary in a frost free place at about 5C. When established, gradually acclimatise to outdoor conditions before planting out in late spring or early autumn, 1.2-2m apart, in deep soil in a sunny position.
Note: Can also be sown in situ outdoors in mid-spring in a well-prepared seed bed, but they will need good protection from wildlife and slugs & snails.