What are the propagation methods for the giant spider lily (Crinum asiaticum)?

Seed sowing and division are commonly used.

Division

Division can be done in spring or autumn, preferably in spring when repotting. Turn the mother plant out of the pot, peel off the bulbs around it, and plant them separately.

Sowing

When the seeds are ready to go into the soil, they need to be placed flat, with the sprouting end facing up.

(1) Use leaf mold or fine sandy soil that has been sterilized. (Leaf mold needs to be soaked in boiling water, while fine sandy soil needs to be roasted.) Maintain a temperature of around 25°C. Roots and sprouts will appear in about 50-70 days.

(2) Select two or three leaves for transplanting, and do not expose them to strong light during the germination period.

(3) For seed propagation, planting is best done in late autumn, sowing while collecting seeds. Cover with soil to twice the diameter of the seed, keep the potting soil moist at all times, water frequently, and once the seedlings emerge and grow about 3 true leaves, they can be planted out.

How to grow the giant spider lily

1. Soil:

The giant spider lily is not demanding about soil and tolerates saline-alkaline soil. It grows best in soil rich in humus, loose and fertile, and well-drained.

2. Watering:

During the growing season, the giant spider lily needs plenty of water. Keep the soil moist regularly, but avoid waterlogging. Reduce watering after autumn.

3. Sunlight:

To keep the leaves emerald green, neat and attractive without affecting light exposure, the giant spider lily should be properly shaded during the hottest part of summer. From 7 a.m. to 12 p.m. it should receive full sun, and from 12 p.m. to 3 p.m. a shade canopy should be set up for shade.

4. Temperature:

The giant spider lily likes warmth and is not cold-tolerant. The optimum growing temperature is 15-20°C, and in winter it needs to overwinter indoors at no less than 5°C.

5. Fertilizing:

The giant spider lily likes fertilizer. Apply manure fertilizer 2-3 times a month, and add phosphorus fertilizer 2 more times before and after flowering, which helps produce more flowers and prolong the flowering period.

6. Pruning:

After flowering, if seeds are not wanted, cut off the flower stalk, and remove old yellow leaves at the same time.

How to grow the giant spider lily

The giant spider lily, also known as wenzhulan, luoqundai, wenlanshu and so on, has both beautiful flowers and leaves and high ornamental value. It can be used as a decorative accent for green spaces in gardens, campuses and institutions, and for lawns in residential communities. It can also be used as a courtyard ornamental flower, or as a hedge around buildings. Grown in a pot, it can be placed at the entrance of formal conference halls, grand hotels and banquet halls. Let us take a look below at how to grow the giant spider lily!

Growing habits of the giant spider lily

The giant spider lily is native to Indonesia, Sumatra and elsewhere. It is cultivated in the tropical and subtropical provinces of southern China, and is especially widely grown in Xishuangbanna, Yunnan Province. It likes a warm, humid environment with ample light and fertile sandy loam. It is not cold-tolerant and tolerates saline-alkaline soil, but during the seedling stage it should avoid strong direct sunlight. The optimum growing temperature is 15-20°C. During the winter bulb dormancy period, the suitable storage temperature is around 8°C.

Propagation methods for the giant spider lily

1. Division: The giant spider lily can be divided in spring or autumn, preferably in spring when repotting. Turn the mother plant out of the pot, peel off the bulbs around it, and plant them separately.

2. Sowing: For the giant spider lily, sowing is best done in March to April. Sow in points in a shallow pot, cover with about 2 cm of soil, water thoroughly, and keep moderately moist at 16-22°C, but not too wet. Sprouts will appear in about 2 weeks.

How to grow the giant spider lily

1. Soil: The giant spider lily is not demanding about soil and tolerates saline-alkaline soil. It grows best in soil rich in humus, loose and fertile, and well-drained.

2. Watering: During the growing season, the giant spider lily needs plenty of water. Keep the soil moist regularly, but avoid waterlogging. Reduce watering after autumn.

3. Sunlight: To keep the leaves of the giant spider lily emerald green, neat and attractive without affecting light exposure, it should be properly shaded during the hottest part of summer.

4. Temperature: The giant spider lily likes warmth and is not cold-tolerant. The optimum growing temperature is 15-20°C, and in winter it needs to overwinter indoors at no less than 5°C.

5. Fertilizing: The giant spider lily likes fertilizer. Apply manure fertilizer 2-3 times a month, and add phosphorus fertilizer 2 more times before and after flowering, which helps produce more flowers and prolong the flowering period.

6. Pruning: After flowering, if seeds are not wanted, cut off the flower stalk, and remove old yellow leaves at the same time.

Precautions for the giant spider lily

1. In the hot summer, the giant spider lily fears the scorching sun most of all. When this season arrives, move the plant to a shady area or a north-facing balcony for care, keeping the ground sufficiently watered at all times so the environment stays dry, moist and cool.

2. The giant spider lily likes fertilizer, so during cultivation be sure to fertilize frequently. During the growing season, fertilize frequently with diluted fertilizer. In spring, mainly use nitrogen fertilizer; switch to phosphorus and potassium fertilizer during the bud stage; and in autumn switch again to cake fertilizer, about once every two weeks in rotation.

3. During the growing season of the giant spider lily, pay attention to watering. The watering method differs across spring, summer, autumn and winter. In spring it needs watering almost once a day; in summer, water once every evening; from the start of autumn, reduce it; and in winter it must be strictly controlled, about once every two weeks.

4. The giant spider lily needs protection from the cold. In northern regions this is around October, while in southern regions it is relatively later; by November the plant needs to be moved indoors, placed in a sunny spot, and kept at around 10°C to overwinter.