Growing Forsythia In Pots. Forsythia will flower best in full sun. To layer a branch just place a pot near an established forsythia plant.
If you want to grow forsythia as a dense hedge individual plants should be about 1 2m 4ft apart. Water well to settle the surrounding ground around the rootball. To layer a branch just place a pot near an established forsythia plant.
Fill around the rootball and firm the soil down gently but firmly.
There are two good times to plant forsythia after it blooms and just prior to winter dormancy. In containers pruning to a formal shape is probably going to make the plant look more attractive and balanced. Fill around the rootball and firm the soil down gently but firmly. Take a cutting from a mature forsythia plant.