A Detailed Guide to the Latest Cultivation Methods for the Spider Brake Fern

The spider brake fern is also known as well-bar grass, small-leaf spider brake fern, and so on. It is a fern in the family Pteridaceae, genus Pteris. Its tender leaves are edible and are called “fern vegetables.” Grown in pots, it can accent a desk, tea table, windowsill, and balcony, and it is also suitable for hanging or wall-mounted arrangements in the living room, study, and bedroom. The whole plant can be used medicinally. Now let us take a look together at how to cultivate the spider brake fern!

Growth Habits of the Spider Brake Fern

The spider brake fern is native to China as well as Europe, Africa, and other places. It grows at the edges of bamboo groves, in river valleys, on walls, beside wells, in rock crevices, and in moist spots in mountain forests. It likes warm, humid, and shady environments and dislikes waterlogging. It requires shade, moist air, and well-drained soil. It is relatively cold-tolerant, with an optimum growth temperature of 10-26degC, and the overwintering temperature can go as low as 0-5degC.

Propagation Methods for the Spider Brake Fern

1. Spore propagation: The spider brake fern has no seeds and usually reproduces by asexual spores. Because fresher spores germinate faster and have a higher germination rate, collect and sow them as soon as possible after the spores mature. Before sowing, first disinfect the planting containers and substrate and keep them clean and hygienic. Research has found that the seedling formation rate is highest when using 1/2MS with sucrose added at a concentration below 2% as the culture medium. After the spores germinate, once the seedlings grow to a certain size, they can be potted.

2. Division propagation: Division propagation is the most common propagation method for ferns. This method is simple and easy to carry out, but the survival rate of propagation is low. It is generally used when the propagation quantity is not large and is not suitable for large-scale production. For household potted spider brake ferns, division is usually done in April and May. Before division, reduce watering to make it easier to remove the soil. After removing the soil, use a sharp tool to divide the plant into 3-4 clumps, then plant them separately in small pots and care for them carefully until new primary leaves grow from the tuber area and new plants form.

Cultivation Methods for the Spider Brake Fern

1. Water and fertilizer: The spider brake fern should be kept with moist potting soil, and during the growing season water should be supplied abundantly. Generally, watering once every 2-3 days is sufficient. Although the soil should be kept moist, for the spider brake fern a slight drying between waterings is also fine. The spider brake fern should not be overwatered either, as too much water can cause the leaves to drop.

2. Temperature: The suitable temperature for the spider brake fern is 16-28degC. Growth is poor above 30degC or below 15degC. In winter it must not go below 5degC. Winter care requires heating equipment. If no heating facilities are available, double-layer insulation can be used. In winter, when the temperature drops to 22-24degC in the afternoon, the greenhouse should be sealed promptly. Summer care requires cooling equipment (exhaust fans and water curtains).

3. Humidity: The spider brake fern likes high-humidity environments and cannot tolerate dryness. During care, mist the plant and its growing environment frequently to increase humidity. The suitable humidity is around 75-80%. Excessive dryness can cause the leaf edges to turn yellow and wither, or even the entire leaf to turn yellow and wither.

4. Light: The spider brake fern likes warm, semi-shaded environments and is suited to diffused light. It must not be exposed to direct sunlight, otherwise it easily wilts and curls. At 15 days after planting, keeping light at 2000-3000 Lux is more suitable for the growth of small seedlings. In the first month after planting, keeping overall light at 3000-4000 Lux is more suitable. In the second month, keeping overall light at 6000-7000 Lux is more suitable. In the third, fourth, and fifth months, keeping overall light at around 7000-8000 Lux is more suitable.

5. Pruning: During the rapid growth period, the spider brake fern grows quickly, and overly dense leaf clusters lead to weakened growth. Old leaves at the bottom may suffer from poor ventilation and light penetration, resulting in withered leaves, or water droplets may accumulate on the leaves for long periods, making leaf rot likely. Therefore, during the rapid growth period, prune and repot in timely fashion. It is best to prune in autumn, removing dead leaves and yellow leaves, ensuring both smooth air circulation among the plants and an overall attractive appearance.

6. Pests and diseases: During the growing period, the spider brake fern is not easily affected by diseases or pests. However, if the growing environment temperature is too low, ventilation and light penetration are poor, and air humidity is too high, it is highly susceptible to gray mold and damping-off, accompanied by pests such as red spider mites, scale insects, and slugs, causing the plant to wilt, droop, or even die.