Friday, 3 November 2017

How to grow new plants from runners - A Beginner's Guide

How to grow plants from runners Beginner's Guide Green Fingered Blog
Getting new plants from runners costs nothing, and nature does most of the work for you - it's really simple! 


This is the fourth and final post in my series of Beginner's Guides to propagating new plants. If you thought it was easy to sow seeds, take cuttings or plant bulbs, then you won't believe how easy it is to get new plants from runners. In fact they might already be out there in your garden waiting for you. All you have to do is pot them up!

What are runners?

Different plants find different ways of spreading themselves. I frequently help myself to free plants in my garden by potting them up when they appear. Some spread mainly by scattering their seeds, and others by extending their roots underground. Runners are long stems of plants that grow outwards, above ground. Typically new leaves grow at the end of this stem, and these can be potted up to create a new, separate plant. This process is known as layering.  
Strawberry runner How to grow plants from runners Beginners Guide Green Fingered Blog
A typical strawberry runner at the end of
a long stem connected to the parent plant

Why grow plants from runners?

If you have a plant that is sending out runners, you are likely to want to tidy it up by cutting them off, as with the strawberry plants in the top picture. But runners are so easy to capture that its a perfect way to multiply your plants. You may also want them to eventually replace the parent plant. As with taking cuttings, you can produce new plants from runners which can be overwintered inside in case the parent is killed off by bad weather.  Or in the case of fruit, older plants become less productive, so you need to remove them and replace them with younger ones.
 
GREEN FINGERS TIP!
GREEN FINGERS TIP: Strawberries produce the most fruit in their third year and then decline. Try and grow them in beds or containers filled with plants of the same age. When the group of three year old plants reach the end of their third year,get rid of them. Pot up enough runners each year from your existing plants and you'll have a fresh batch to plant each season. Plant them in a separate "Year One" group so you'll know how old they are in years to come on. I haven't bought new strawberry plants in years! 
 

Which plants spread by runners?

Strawberries are probably the most commonly grown plant that can be multiplied by runners, but others that spread in a similar way, by sending creeping stems across the ground include:
Ivy
Clematis
Saxifrage
Winter jasmine (Jasminum nudiflorum)
Ajuga reptans (Bugle)
Chamomile nobile "Treneague"

Chamomile lawn How to grow plants from runners Beginners Guide Green Fingered Blog
My little chamomile lawn is now 2 feet across,
but started with just 3 small plants that have spread
Some creeping plants are less welcome, like brambles and creeping buttercups, but if you have a plant sending out runners that you do want more of, here's what to do...

How do I get plants from runners?

For each runner you want to pot up, you will need one small pot of compost and a paper clip or piece of wire. Since the runners are attached to the parent plant you need to take the pots to the plant.
 
All you need to do is give the runners a chance to take root before you separate them from the parent. Once they have enough roots, they'll survive on their own. Sometimes nature does the work for you. Depending on where they are growing, the runners might take root themselves. Strawberries in pots will have most of their runners dangling over the sides, but plants growing in borders will have runners resting on the soil. These often take root and you can cut these off and pot them up straight away.

How to grow plants from runners Beginners Guide Green Fingered Blog
This strawberry runner has been resting on
compost, and already has a good root system

If they haven't already rooted then you need to give the runners their own soil to root into. Just press the base of the runner into the top of the compost and use a paper clip or piece of wire to pin it in place.

How to grow plants from runners Beginners Guide Green Fingered Blog
Pin your runner to hold it in place with the base in the compost

Leave it attached to the parent plant at this stage. Just put the pot near enough to the parent that they can stay connected for now. If the parent is in a raised bed or container, stand the runners on bricks if you need to raise them up off the ground. After a few weeks, you'll see roots emerging from the base of the pot containing the runner.
How to grow plants from runners Beginners Guide Green Fingered Blog
When roots emerge from the pot, you know the runner can survive on its own
When the runner has its own roots, just snip off the stem that connects it to the parent plant, and grow on in its pot until you're ready to plant it in its final location. 
 
How to grow plants from runners Beginners Guide Green Fingered Blog
Snip it off and you can plant your runner wherever you like
This is a great way to get extra plants for nothing. You can renew your strawberry crop, increase the numbers of certain plants in your garden, or give them away to friends and family. You can also use the same method to multiply certain houseplants, such as spider plants. It's just so easy, you have to give it a go!


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