I have planted 2 clematis this year but they have both grown to about 3 feet tall with one single stem,how do I get them to branch out ?
Never experienced this but could it be that they need more light and are just trying to reach it?
Did you plant them deeper than they were in the pot? This helps them produce more shoots from down below. However, some clematis take a year or two to settle in and get going even after deep planting and they may well produce many more stems in coming years, especially if you feed them well every spring. Clematis are hungry plants.
thinking back maybe I didnt plant them deep enough,thanks for your help.
Deep planting and cool roots(,I put grit around the roots.),and patience,it will probably send out more shoots next year.
I went to a gardening talk on Clematis by a local grower.
Plant deep and keep the roots moist for the first year, The suggestion was to cut an old plastic bottle in half.Push it neck end down in the soil next to the plant. This provides a slow water dip Also to feed with tomorite.
This is not unusual for newly planted clematis, especially if the plants were originally bought in small pots/large plugs. The thing to remember with all new clematis (of any group) is to cut them back to about a foot (30cm) from the ground early in spring (usually end of Feb or early Mar), the year after planting. That will encourage them to bush out and send up new shoots from below ground. As others have said, it's always best to plant them 4-6" (10-15cm) deeper than the original soil level in the pot to encourage them to develop a 'root crown', from which they can send up more shoots. It also protects the roots of large flowered varieties from being killed if they get clematis wilt.
Good advice from Bob the gardener.
I would cut it back to a foot now, you may lose sme flowers this year,but it will be better next.Maybe you didnt cut it back when you planted it,