How to Grow Forsythia: Detailed Planting Methods and Precautions

Forsythia is an excellent traditional Chinese medicine with very powerful effects; it can clear heat and detoxify, and for women it also helps regulate menstruation and relieve pain. In addition, forsythia has high ornamental value. In early spring, golden-yellow flowers dot the branches of forsythia, creating a spectacular sight, with a delightful fragrance carried on the breeze. This is also the season suitable for growing forsythia in pots.

How to Grow Forsythia

1. Soil selection: Forsythia is suitable for growing in fertile, well-drained calcareous soil, with relatively fertile garden soil being the best.

2. Fertilizing: In spring and autumn, apply a decomposed dilute liquid fertilizer or compound fertilizer to forsythia once every 15-20 days; stop fertilizing in summer. In autumn, you can also spray the leaves with monopotassium phosphate and other fertilizers with a relatively high phosphorus content to promote the formation of flower buds.

3. Temperature: Forsythia has no strict requirements for climate; it likes a warm environment and is also relatively cold-tolerant, and can tolerate a semi-shaded environment.

4. Light: Forsythia likes a sunny environment. On ordinary days, provide it with good light, but do not expose it to long periods of intense sun.

5. Watering: Forsythia is relatively tolerant of drought and can also grow well in a moist and humid environment, so there is no need to water too frequently; watering once a week is enough to ensure its growth.

Forsythia Planting Methods and Precautions

I. Forsythia Planting Methods

1. Soil

Forsythia does not have high requirements for soil, but it grows best in loose, fertile, drained and breathable soil.

2. Watering

The soil must not be too dry. Usually keep the potting soil moist, but do not let water accumulate. Pay attention to drainage during the rainy season to avoid root rot caused by water accumulation in the potting soil.

3. Light

Forsythia likes sunlight. Although it can tolerate semi-shade, during the growing season it is best to place it outdoors in a sunny, well-ventilated place for care. Even during the high temperatures of midsummer, there is no need to shade it.

4. Temperature

Forsythia is cold-tolerant. In winter, it can overwinter in a cold room, or the flowerpot can be buried outdoors in a wind-sheltered, sunny spot.

5. Fertilizing

In spring and autumn, it is best to apply a decomposed dilute liquid fertilizer or compound fertilizer to forsythia once every 15-20 days; stop fertilizing in summer. In autumn, you can spray the leaves with monopotassium phosphate and other fertilizers with a relatively high phosphorus content to promote the formation of flower buds.

II. Precautions

1. Control watering in winter

In winter, reduce the frequency and amount of watering as much as possible. As long as the soil does not freeze, forsythia can overwinter safely.

2. Pay attention to pruning branches and leaves

For fruit-bearing branch groups that have flowered and fruited for many years and begun to age, carry out heading back or heavy pruning (that is, cutting away 2/3 of the branches), which can promote vigorous branches below the cut and restore tree vigor, increasing the fruiting rate. Autumn pruning is mainly thinning. Apart from keeping 3-7 vigorous main stems per clump, the remaining weak, dead and old, and beginning-to-age branches should be cut away as appropriate. In winter, cut away dead branches, crossing branches, overlapping branches, intersecting branches, slender weak branches, as well as leggy branches and diseased or pest-infested branches.

Reasons Forsythia Only Flowers but Does Not Fruit

1. Low self-pollination fruit set rate

The fruiting rate of forsythia is very low. On the one hand, this is because the self-pollination fruit set rate of forsythia is extremely low, basically around 4%; only cross-pollination gives a higher fruit set rate, but home cultivation generally cannot carry out cross-pollination.

2. Leggy branches disperse nutrients

On the other hand, this is because the branches and trunk of forsythia have strong growth vigor, and every spring it sends out many leggy branches. These leggy branches have no ornamental effect and also cause the nutrients of the main branches to be dispersed, thus leading to a low fruiting rate in forsythia.

What to Do If Forsythia Only Flowers but Does Not Fruit

1. Promote cross-pollination

When transplanting, plant long-styled plants and short-styled plants alternately to promote cross-pollination.

2. Prune reasonably

After forsythia is planted, when it reaches about 1 m tall, cut off the top shoot after leaf fall in winter, and pinch the tips in summer to encourage more branching. From these, choose 3-4 well-developed side branches in different directions and cultivate them as main branches.

3. Fertilize reasonably

After pruning forsythia, apply additional decomposed compost or barnyard manure; you can also apply superphosphate together. Dig pits beside the plant, apply the fertilizer, then cover with soil, and mound soil around the roots to promote healthy growth of young trees and more flowering and fruiting.

Forsythia is an excellent early-spring ornamental flowering plant. Every year in early spring when forsythia blooms, golden-yellow flowers cover its branches. The flowers are lush and dense, and seen from a distance they form a sea of flowers, from time to time giving off waves of fresh fragrance, and are deeply loved by everyone.