Forsythia suspensa is a deciduous shrub of the genus Forsythia in the family Oleaceae.Its life limit is between 35 and 40 years.If it is used as a garden, the life span will be shorter, and the life limit is between 25 and 30 years.It blooms early, opening its leaves first.It is the earliest flowering shrub in the northern region.
The annual forsythia seedlings planted are generally maintained for more than three years before they begin to bear fruit, and the initial fruit yield is relatively small.After 8 to 10 years of maintenance, it will reach the full fruit period, and the fruit volume will gradually increase.Each plant can produce 15-20 kilograms of green forsythia, slowly profitable.
Forsythia fruit is not more than two reasons.One is self-pollination, self-pollination fruit rate itself is very low, only about 4%, as far as possible cross-pollination, so that fruit rate will be improved.Specifically, when planting, the long style and the short style are alternately carried out, so that better pollination can be achieved in the later period and more results can be achieved.Second, pruning is not timely.Especially in the spring of each year, it is necessary to prune in time, prune the long branches, save nutrient consumption, promote nutrient concentration, so as to improve its fruit setting rate, promote more flowering and more fruit.