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Broccoli 'Ironman' F1 Hybrid (Calabrese)

Brassica Oleracea

84% (5 Reviews)

Top performing calabrese

Offers the longest cropping period

Ready to harvest in as little as 75 days after transplanting

Good tolerance to hollow stem and resistance to bolting

This product is produced and supplied in association with Thompson & Morgan

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Description Sowing More Info Delivery Reviews
Grow like a pro with Calebrese Ironman F1. Commercial growers have replaced traditional Marathon with Ironman F1 and so should you! This top performing calabrese offers the longest cropping period from late May through to October, producing uniform blue-green domed heads. A quick-cropper ready to harvest in as little as 75 days after transplanting. Broccoli Ironman F1 shows good tolerance to hollow stem and resistance to bolting. Suitable for closer spacing for baby head production, or simply because growing space is tight. Height and spread 40cm (16").


1 packet (30 broccoli seeds) (75016)

Sow broccoli seeds in a well-prepared seed bed from March to June at a depth of 13mm (1/2") and spaced 30cm (12") apart. Transplant to their final positions around 5 weeks later when the seedlings have four or five leaves.

When growing calabrese, choose a sheltered position in firm, rich fertile, well drained soil in full sun. Prepare the soil in early spring by adding plenty of well rotted farmyard manure to the soil to improve its structure and fertility. Take care when transplanting Calabrese as it resents root disturbance. Plant calabrese at a distance of 22cm (9") apart, and cover with a protective netting or fleece to prevent attack from birds and insects. Water the plants thoroughly after planting.

Water sprouting broccoli plants regularly and do not allow them to dry out as this may impair their development. Hoe between plants regularly to prevent weeds from establishing and bring insect larvae to the surface. Purple sprouting broccoli should be harvested before the flowers open. Pick shoots when they are 15cm (6") long. Regular picking will encourage more shoots to be produced. Don't remove the large leaves as these will protect the next batch of shoots as they develop. Culinary note: Sprouting broccoli is suitable for freezing.

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 or potting on. Delivery times will be stated on the product page above, or in your order acknowledgement page and email.

Orders for packets of seed incur a delivery charge of £2.99.

Orders which include any other products will incur a delivery charge of £4.99.

Where an order includes both packets of seeds and other products, a maximum delivery charge of £6.99 will apply - regardless of the number of items ordered.

Large items may incur a higher delivery charge - this will be displayed in your shopping basket.

Please see our Delivery page for further details, and more information on different charges that may apply to certain destinations.

For more information on how we send your plants please visit our Helpful Guide on plant sizes.

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