Growing Forsythia In Containers. Forsythia is deciduous which means in the winter the branches are bare and the flowers are followed by small fresh green leaves. Forsythia can be grown from seed but harvesting the seed is not so easy.
In our forsythia growing guide we discuss all you need to know to cultivate this sun loving vigorous shrub in your landscape. This species plant reaches mature dimensions of 8 to 10 feet tall and 10 to 12 feet wide. The soil in the container should be moist and well drained.
Forsythia is can grow up to around 3 metres and is fully hardy.
Plant all forsythias just deeply enough to allow the shrub to stand up. Forsythia is can grow up to around 3 metres and is fully hardy. Forsythia can be grown from seed but harvesting the seed is not so easy. A little garden compost can be worked into the soil.