How well will Dwarf Green Beans grow in Autumn here in northern England? Our main growing season here is during Spring and Summer, but I’ve read a few articles about gardening people trying to extend the productive season for vegetables.
With this idea in mind and following on from my air-pruning plant pot experimenting over the Summer, I’ve decided to try out my next experiment – growing Dwarf Green Beans in Autumn.
I’d read that the particular strain of bean I have chosen to plant can germinate at temperatures as low as 7 degrees Celsius. Having said that, I intended carrying out my Autumn bean-growing experiment indoors, partly because I anticipated a better crop of beans from a warmer environment and partly because I expect the snails with which I share my back yard would find green beans irresistible!
Creating some suitable plant pots was my first task. If you’ve seen any of my earlier posts on growing plants using the air-pruning method, you may recognise the upcycling transformation of these 4 pint milk cartons into air-pruning plant pots. For anyone looking for more information on air-pruning, you can find the detailed post on how I created the air-pruning pots and simple grow bags here.
My choice of bean is the variety “Primavera” from D.T. Brown’s seed merchants, a dwarf pencil podded French Bean. As I was looking to grow my plants indoors, I needed compact plants that would only grow to about 2 feet/60 cm in height. “Primavera” is highlighted in the catalogue as a D.T. Brown’s Choice vegetable and is expected to crop heavily in normal conditions. This variety is also advertised as being weather-resistant and having good disease resistance, so I was hopeful that I’d made a good choice.
I sowed two beans in general purpose compost in each of my air-pruning plant pots on 9th August. Just eight days later I was delighted to see the first three beans had germinated and the fourth bean germinated the following day. I kept the plants well-watered and placed them on a fairly sunny and bright west-facing window ledge.
By 12th September I noticed the first tiny beans had begun to develop on the plant furthest to the left in the photos.
By 22nd September I was amazed to count 16 beans on this first plant but sadly there were none to see on the two plants in the right-hand plant pot. I observed that although flowers were forming on the plants in the right-hand pot they did not seem to be growing properly. I decided to move the right-hand plant pot and leave a good space between the pots to allow more light to reach these so-far-unproductive bean plants. Within five days of moving this pot I spotted a couple of tiny beans beginning to develop on these plants.
The beans on the first-cropping and most productive plant have progressed well. I photographed them on 25th September and again today, 29th September. Some of the beans are starting to fill out a little now too … not long before the first few will be ready to pick!
When I checked on my bean plants today, 29th September, I noted a couple of yellow leaves. I haven’t fed the bean plants up to this point but I shall start adding some of my Comfrey “magic potion” when I water the plants now.
We had some dull, damp and misty weather earlier this month but the last week has been much sunnier with some very warm days. As temperatures cool, I shall have to see how my Autumn-grown green beans continue to grow in their air-pruning plant pots. I shall let you know.
J Peggy Taylor