These plants are cultivated in small vases, therefore we suggest placing the containers in a place sheltered from the sun during the hottest weeks of the summer. Plant which need at least a few hours a day of solar light.These plants don't fear the cold weather and therefore can be grown in the garden during any time of year.
Bonsai are grown in very small containers, that's why itís good to add small doses of fertilizer frequently, so that the plants always have the right dose of nutrients. In the spring letís use specific fertilizers, rich in nitrogen and potassium, every 20-25 days.
The Forsythia grows erect, developing a short stem with a small crown, usually roundish. These plants are shrubs. This plant in the spring assumes a yellow colouring; it is medium in size and can reach 90 cm high. It doesn't keep its leaves in the winter.
Letís avoid watering the the Forsythia excessively, always leaving the soil dry for a few days between one watering and the other, therefore letís irrigate the substratum deeply every 10-11 days with 2-3 glasses of water . These plants are located in vases; to avoid them from enduring long periods of drought we suggest to check the moisture of the substratum in the vase periodically.
As the day-time temperatures rise at the beginning of the spring, it is agreeable to practice a preventive treatment, with a wide-range insecticide, which should be applied when there arenít flowerings in the garden. Before the buds become too large, it is advisable to also treat them with a wide-range fungicide, to prevent the development of fungal diseases which spread easily when there is an elevated environmental moisture.
We suggest cultivating these bonsai in a soft and light, very well drained, soil.
Notes - Forsythia
The Forsythia is scented; It can be grown in a vase when desired. The indications given in this article are related to a medium size plant.