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Cauliflower Seeds, Romanesco Italia
Description
(Brassica oleracea). A true and popular Italian heirloom with stunning, apple-green heads that are superbly flavored. Its fractal form is a fascinating logarithmic Fibonacci spiral. This variety is widely grown in northern Italy. A must with many of the finest chefs.
- 75-100 days to maturity
- Full sun
- Sprouts in 7-10 days
- Seed Depth: 1/4" to 1/2"
- Plant Spacing: thin to 18-20"
- Ideal Temperature: 50-75 F
- Frost Hardy: Yes
Growing Tips, Tricks and FAQs
Growing Tips
Romanesco Italia is a cool-season crop that thrives in cooler temperatures. It prefers full sun exposure and fertile, well-drained soil rich in organic matter. Adding compost or well-rotted manure before planting can improve soil fertility and help the plant thrive. This variety is quite sensitive to heat, the ideal temperature for optimal growth is 50-75 F.
When to Grow
For optimal growth, start seeds indoors 6-8 weeks before the last expected frost date in spring. For a fall harvest, sow seeds in mid to late summer. Romanesco can be direct-seeded or transplanted once the seedlings are large enough. In warmer climates, growing it as a fall crop with a winter harvest is often more successful to avoid the heat of summer.
How to Sow and Plant
Sow seeds 1/4 to 1/2 inch deep in well-draining, loamy soil with a pH of 6.0 to 7.5. Space the plants 18-20 inches apart to give them enough space for growth. When transplanting, plant them at the same depth as they were in their pots, ensuring that they are watered well after planting. Mulching around the base can help retain moisture and regulate soil temperature.
How to Grow
Romanesco requires even moisture; do not let the soil dry out completely between waterings. Regular watering and mulching are key to maintaining the moisture level and preventing the roots from drying out. Fertilize the plants with a balanced fertilizer during the growing season, especially if the soil is not naturally rich. Romanesco is a heavy feeder, so providing additional nitrogen can support its growth.
How to Save
- For a seed saving crop, isolate cauliflower from other brassicas (such as broccoli and kale) by one mile to avoid cross pollination.
- Select your best plants to keep for seed and leave them to flower.
- In short-season areas with harsh winters, the plants can be mulched and left in the ground with a row cover, and in the second season the plant will send up flower stalks from the head. As they mature, they will become seed pods.
- Once the plant has died back and the seed stalks/pods are brown and dry, pull the entire plant and hang it for up to two weeks in a dry, well-ventilated area.
- Break open the seed pods with your hands or a rolling pin over a container such as a bowl or plate, and separate and extract the seeds.
- Properly stored (keep them cool and dry!), the seeds of cauliflower and other brassicas will be viable for up to five years.
FAQ
How often should I water Romanesco Italia cauliflower?
It needs consistent and plentiful moisture. The soil should remain moist but not waterlogged to prevent root rot. Regular watering and mulching can help maintain the right moisture levels.
Can Romanesco Italia cauliflower be grown in containers?
Yes, Romanesco can be grown in containers, provided they are large enough. Follow the same care guidelines as for in-ground plants, ensuring sufficient sunlight and consistent watering.
Do I need to blanch Romanesco Italia cauliflower?
Unlike traditional white cauliflower, blanching is not necessary for Romanesco​.
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