A Detailed Explanation of Canna Edulis Planting Techniques and Management Key Points

Canna edulis is edible, suitable for the elderly, the weak and young children, or for making starch noodles and brewing wine, and some rural areas grow canna edulis. So what are the planting techniques for canna edulis?

1. Planting

Seed propagation of canna edulis is mainly used for breeding new varieties. In rural cultivation, most growers use the tuber propagation method, using small tubers or cutting large tubers into small pieces, each piece must have 1-2 buds, then burying them in clean sandy soil to sprout. After about half a month, when the buds grow to 4-5 cm, they are planted out. Whole small tubers can be planted directly in the field.

2. Light

Canna edulis is best grown in full sun, and during the growing period it requires sufficient light, ensuring at least 5 hours of direct sunlight per day. If the environment is too shady and light is insufficient, the flowering period will be delayed. If it is placed in a cool spot when flowering, the flowering period can be extended.

3. Temperature

The most suitable growing temperature for canna edulis is 15 to 30 degrees. If you want to extend the flowering period when it blooms, it can be placed in a spot with low temperature and no sunlight exposure, and the ambient temperature should not be lower than 10°C. When the temperature is above 40°C, the canna can be moved to a ventilated, cool place. Around the time of Frost's Descent, potted plants can be moved to a place at 5-10°C, and they can safely overwinter.

4. Water and Fertilizer Management

1. Watering: Canna edulis is fairly tolerant of moisture, so it can be watered a bit more appropriately, but in the hot summer, if the water used is too cold, it can also cause the leaf edges to scorch.

2. Fertilizing: In addition to applying sufficient base fertilizer before planting, topdressing should be done 3-4 times per month during the peak growing season. If flower buds have not yet emerged 20-30 days before the expected flowering period, a 0.2% potassium dihydrogen phosphate water solution can be sprayed on the leaves to promote flowering. Applying fertilizer too concentrated during the hottest summer period can even burn the rhizomes and “burn them to death”.

Canna edulis can be sliced or shredded and stir-fried, or served as a cold dish, as a pickled vegetable; it can be used to develop starch and for deep processing, and the planting benefits are still relatively high.