How to propagate campanulas

How to propagate campanulas

Boost your stock of campanulas by taking basal cuttings in spring – we show you how.

A table displaying which months are best to sow, plant and harvest.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
To do
To do

Do not To do in January

Do not To do in February

Do To do in March

Do To do in April

Do not To do in May

Do not To do in June

Do not To do in July

Do not To do in August

Do not To do in September

Do not To do in October

Do not To do in November

Do not To do in December

The earliest soft green shoots of herbaceous campanulas make fast-rooting cuttings, known as basal cuttings.

Taken from below soil level, some have roots already, which helps them grow quickly. As well as campanulas, you can also use this technique on chrysanthemums, asters, delphiniums, dahlias and heleniums.

Once potted, the cuttings will root in the greenhouse or cold frame with no extra heat, although a propagator will speed things up.

Several cuttings around the edge of a pot can make an instant clump for planting by June, or pot them on as singles for planting next year.

Discover how to propagate campanulas by taking basal cuttings, below.

The earliest soft green shoots of herbaceous campanulas make fast-rooting cuttings, known as basal cuttings. 
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You Will Need

  • Sharp knife
  • Peat-free multi-purpose compost
  • Clear polythene bags

Total time:

Step 1

Use a sharp knife to cut down into the point at which shoots emerge from the root system. There must be some solid tissue at the base of the shoot you cut.

Cutting some of the basal root
Cutting some of the basal root

Step 2

Trim the base of the cutting, and if the rosette of leaves is very big, reduce water stress by trimming the leaves down by half.

Trimmed cutting
Trimmed cutting

Step 3

Plant the cuttings firmly, in multi-purpose compost as they will grow quickly and need the extra feed that this compost offers.

Inserting the cuttings into compost
Inserting the cuttings into compost

Step 4

Water the cuttings thoroughly then place the whole pot in a polythene bag and tie the top. They root fast, but untie the bag and air them regularly to prevent rots.

Tying the polythene bag
Tying the polythene bag
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Cuttings aftercare

Your campanula cuttings may wilt initially, but pot them up quickly and water well, and they’ll soon recover. Grow them on in a bright sheltered spot such as a greenhouse or coldframe. Rooting will occur after a few weeks, after which you can expect more substantial plants which will need potting on.

Coldframe