RADICCHIO CULTIVATION IN THE NURSERY
Radicchio (Cichorium intybus) is a leafy vegetable from the Asteraceae family, valued for its slightly bitter taste and resistance to cold. Nursery cultivation allows for optimal management of germination and the early stages of growth, improving the final yield.
1. Choice of Type
The choice of type depends on the climatic conditions and the desired harvesting period. For more information, take a look at our Chicories Zine.
There are several types of radicchio, including:
2. Sowing in the nursery
Sowing period:
- For autumn/winter crops: sowing between June and August.
- For spring crops: sowing between January and March.
Method:
- Use alveolar containers or trays with light soil.
- Sow the seeds at a depth of 0.5 cm.
- Water gently to keep the soil moist.
3. Germination and Growth
- When choosing the substrate and watering, it is important to pay attention to the cleanliness and disinfection of the environment and trays.
- Germination occurs in 2-5 days at an optimal temperature of 25-28°C.
Note: Chicories have optimal germination at temperatures above 25°C. Ensure this temperature is maintained until the sprout emerges.
- Avoid water stagnation to prevent root rot.
- If possible, avoid exposure to temperatures above 35°C and below 24°C.
- The plants are ready for transplanting at the 4th leaf stage, that is, after a maximum of 30 days from sowing in winter and 20-25 days in summer.
- It is strongly recommended to mechanically remove the seedling from the alveolar container 5 days before transplanting, from the bottom of the container, rather than pulling it simply by the foliar system at the time of transplanting, in order to avoid possible damage to the foliar and root system.
Note: Be careful not to transplant a seedling that is TOO old and/or STRESSED (>30 days), as it FACILITATES BOLTING!
- In particular, during summer sowings, be cautious of insect attacks (aphids, thrips, lepidoptera). If present, spray appropriately with specific products, carefully following the dosage, application method, etc.
The advantage of the nursery:
Growing radicchio in a nursery allows for the production of strong and healthy seedlings, ready for transplanting into the field. With the right care and careful management of irrigation and nutrition, high-quality yields will be achieved, ideal for fresh consumption or culinary processing. For a comprehensive guide to radicchio cultivation, from soil preparation to harvest, don't miss our How To Grow Radicchio Zine.