Tag Archives: plant growth in air-pruning plant pots

Autumn Green Beans

Autumn Green Beans – harvest time

Growing green beans in Autumn has been a first for me this year. Buoyed by the success of my initial air-pruning planting experiment earlier in the Summer, I was keen to keep up my air-pruning experimenting momentum.

Here in northern England we would normally sow green beans in May and harvest them through July and August. I decided to sow my green beans in early August and see what happened.

Primavera Dwarf Green Bean - DT Brown seed packet
Primavera Dwarf Green Bean – DT Brown seeds

The beans I am growing are “Primavera”, which is what we call a French bean – a long,thin and round stringless green bean. As I was growing my plants indoors, the variety I’ve chosen is a dwarf bean – the plants only grow around 2 feet high (60cm). In my earlier post I showed you how I’d sown the beans in their upcycled air-pruning plant pots and their progress up to the end of September. So, how have they fared in the last month?

My first green beans ready to harvest on 7th October
My first green beans ready to harvest on 7th October

On 29th September the two plants in the more successful of the two plant pots had grown to their full height and there were several promising-looking green beans on these plants. I decided to give them another week of growing time before my first ‘harvest’ on 7th October, almost exactly two months after sowing. After I’d picked my first beans, there were still several developing beans left on the plants, plus there were now a few beans growing on the plants in the second plant pot. The two plants in the second plant pot have never quite caught up with the plants in the first pot. In my earlier post I explained that light levels were the issue that made the difference between the two sets of plants. The plants have been growing in a bright, west-facing window.

The less well-grown second pot of green bean plants with their beans ready to pick
The less well-grown second pot of green bean plants with their beans ready to pick

If you’ve grown beans before, you’ll know that regular harvesting normally encourages more beans to grow. I kept the plants well-watered and fed with my ‘Magic Potion’ Comfrey feed and this has kept the developing beans growing well. However, since early October, a few colder nights seemed to begin impacting on the foliage and also killed off the remaining flowers. I began covering the glass of the window each night with some recycled packaging I had to hand. I noticed the green beans on the plants seemed to be growing quite slowly now, although we have had a lot of sunny and warm days in October this year.

Second harvest of green beans ready to pick on 22 October
Second harvest of green beans ready to pick on 22 October

Two weeks later, on 22 October, I ‘harvested’ the second handful of green beans, including a couple from the less successful plants in the second plant pot. I would certainly say that whilst I am pleased that at least some beans did grow on all of the plants, the plants haven’t exactly been prolific! Quite a number of small flower buds developed but then fell off before flowering properly. I don’t see these as problems with the Primavera bean plants themselves, nor the fact the plants have been indoors in air-pruning plant pots, but rather that green bean plants are not built to withstand cooler temperatures.

Successful Sage plant and some of the green beans
Successful Sage plant and some of the green beans

To an extent this was not an unexpected outcome to my Autumn bean growing experiment. In the past, in my eagerness to get things growing in Spring, I’ve sown bean plants too early in May and had them fail because the temperature was too low. Getting the plants to germinate seems relatively easy, but it does seem the weather needs to be warm enough during the day and night to enable the bean plants to be productive. I’m pleased to say the Parsley, Thyme and Sage herb plants that I grew from seed this Spring and that have accompanied the green bean plants on the same window ledge are continuing to flourish.

Flourishing Parsley and Thyme plants with fading green bean leaves
Flourishing Parsley and Thyme plants with fading green bean leaves

I shall try sowing some more of the Primavera dwarf green bean seeds next May and see how they do in Summer … making sure I don’t sow them before it’s warm enough of course!

With all of these green beans and green herbs, I decided to link this post to Cee’s Fun Foto Challenge this week, on the theme of ‘green’. Do take a look at the wonderful greens others have found for the challenge.

J Peggy Taylor

Sweet Pea plants growing on a willow garden screen

Air-pruning plant pot experiment – UPDATE

Growing plants in air-pruning plant pots was a new experience for me this year so I have been watching and learning from my Sweet Peas as they have gradually progressed.

My air-pruning experiment: the project progress

My six upcycled air-pruning plant pots now complete with their newly sown Sweet Pea seeds
My six upcycled air-pruning plant pots now complete with their newly sown Sweet Pea seeds

It seems a long time since mid-April when I sowed the Sweet Pea seeds in their cosy grow bags inside my upcycled milk carton air-pruning plant pots. The seeds quickly germinated and the Sweet Pea plants were soon on their way.

Air-pruning plant pots firmly secured to the gate and the Sweet Pea plants arranged on the jute and willow garden screen
Air-pruning plant pots firmly secured to the gate and the Sweet Pea plants arranged on the jute and willow garden screen

When I put them outside in the middle of May, the plants only just reached up far enough out of their pots for me to encourage the shoots to set off on their journey up the jute and willow garden screen that I had specially constructed for this purpose.

By the end of July the plants were grown to their full height (1.8 metres/6 feet) and the first flowers appeared … pink, followed by white and then a deep maroon.

Pink, White, Maroon - Sweet Peas on the willow screen
Pink, White, Maroon – Sweet Peas flowering on the willow garden screen

My air-pruning experience: thoughts and observations

Whilst generally I am very pleased with my air-pruning experience during this Spring and Summer, I have encountered a couple of problems with my gardening experiment that I thought I’d talk a bit about in this post.

Air-pruning plant pots in the microclimate behind the wall
My air-pruning plant pots in the cooler, damper micro-climate behind the wall

I set three pots of plants to grow from behind my small yard wall (approx. 90cm/3 feet high) and three pots of plants to grow up over my yard gate, which is around the same height. Although these two areas are only inches apart, they have very different micro-climates.

The small area behind the brick wall is fairly dark and damp because it is immediately adjacent to our refuse and recycling bins. I had also previously planted my new Willow cuttings in their pots in this corner of the yard and, as they had grown on a little, they affected the light level too. The combination of these elements means this part of the yard tends to stay cooler with no direct sun.

As I'd anticipated the Sweet Pea plants are mainly growing on the outside of my backyard garden screen
As I’d anticipated the Sweet Pea plants are mainly growing on the outside of my backyard garden screen

The wooden planked gate forms the boundary to the other half of the yard. With the open yard area immediately inside the gate, this half of the yard has more air movement, plus the warmth of the sun soon warms up the wooden gate.

In the cooler, damper conditions behind the wall, it wasn’t long before the snails showed up! When I say ‘showed up’, it was mainly a case of ‘left a trail’ … not only of glistening slime, but also of half-chewed leaves – though only on one particular Sweet Pea plant. Why only one plant, I can’t be certain – but I was pleased to see at least it wasn’t all three!

Snail in Sweet Pea grow bag
Spot the snail snuggled into the Sweet Pea grow bag!

One day I managed to catch up with my plant-munching visitor as it snuggled down into the evidently-too-cosy grow bag! Have you ever found yourself addressing a mollusc?! I must say, I took pity on the poor starving creature who was, of course, merely seeking an evening meal and a bed for the night! I did however remove it from the Sweet Pea pot and found it a new home elsewhere!

Moody mollusc - my snail visitor
Moody Mollusc peering disgruntledly from under its shell

There was one other aspect of my Sweet Pea air-pruning plant pot experiment that I have could have been happier with and that relates to the size of the pots I chose to use. If you have grown Sweet Peas before, you will know they normally prefer to grow in quite deep soil. However, I had previously grown them successfully in a pot that was not much deeper than the air-pruning plant pots I was using this year, so that was why I had decided it was worth the experiment.

The problem I encountered was this: as the plants grew taller, the lower leaves quickly yellowed, despite regular watering and feeding. I took a close look at the root systems as far as I could observe them from the outside of the pots. The roots had grown well and exactly as expected in the air-pruning plant pots. There were only the tips of roots showing inside the closed-in areas of the pots. Where the fabric grow-bag was open to the air, the roots had not penetrated the grow-bag. I will be taking an even closer look at how the root systems have developed when the plants are finished flowering and I take them down.

Visible root growth in air pruning plant pot
Root growth in one of the air-pruning plant pots on the wooden gate
Roots in air pruning plant pots
Roots in the air pruning plant pots behind the wall

The plants have reached their full height and flowered, but the yellowing of the leaves has somewhat spoiled their overall appearance on the willow screen. I definitely feel the Sweet Pea plants needed larger pots with a greater quantity of compost to supply them with sufficient nutrients and water. (Apologies for the slightly blurred image below – we had windy weather in August and it was impossible to find a time when the light and the weather allowed for better photo shooting!)

Yellowing foliage on my Sweet Peas
My Sweet Peas at the end of August – flowers but also yellowing foliage

I was very pleased that the Sweet Pea plants grew to their full height, though on hindsight, given the plant pot size I had used, I would probably have been better managing the growth differently. I nipped out the main growing tips when the plants reached the top of the screen, but if I had done this a little earlier and kept the plants a little shorter, I think perhaps the issue with the dying foliage may not have been so bad.

The size of the pots has definitely been an issue I’d rethink for another time. I need either larger pots for Sweet Peas or perhaps I need to choose a smaller growing plant. Another idea I had intended for some of the Sweet Pea plants was to plant them into a wooden plant trough. But, as so often happens, time simply ran out for that idea this year. However, I may contemplate creating some troughs in either wood or woven willow for next year so I shall add it to my Winter projects list!

J Peggy Taylor

Pink Sweet Peas on willow garden screen

Air-pruning plant pot success! My Sweet Peas are flowering!

When I sowed my Sweet Peas in their upcycled air-pruning plant pots, way back in April this year, I wasn’t sure how well my plants would grow. I’d never experimented with air-pruning plant pots before so this was a whole new experience for me.

Despite being in somewhat smaller pots than would normally be used, the Sweet Pea plants I’d hung on my yard gate have still grown to their full height – the fully grown plants are now 175cm (69″) tall. The Sweet Peas are supported on one of the willow and jute garden screens I’d designed and created for this purpose. This project was part of my idea to expand the growing space in my back yard by vertical gardening.

Air-pruning plant pots firmly secured to the gate and the Sweet Pea plants arranged on the jute and willow garden screen
Air-pruning plant pots firmly secured to the gate and the young Sweet Pea plants arranged on the jute and willow garden screen

I have been watching closely as the flowers have been developing on the Sweet Peas. This week I am very happy to report that my first of my Sweet Pea plants has revealed its first beautiful pink blooms 🙂

The first buds appearing on the Sweet Peas
The first buds appearing on the Sweet Peas
Flower buds bursting on the Sweet Peas
Flower buds bursting on the Sweet Peas
The first Sweet Pea flower gradually unfurls its pink petals
The first Sweet Pea flower gradually unfurls its pink petals
Pink Sweet Pea flowers in full bloom lit up by the evening sun
Pink Sweet Pea flowers in full bloom lit up by the evening sun

Looking at the other plants along the yard gate that are now budding, we have some creamy white flowers and some deep crimson flowers, so with the pink flowers too, that’s going to be a lovely range of colours growing together.

J Peggy Taylor

Sweet Pea plants growing on a willow garden screen

Planting in air-pruning plant pots – Sweet Pea progress

As this is the first time I have tried planting in air-pruning plant pots, I’ve been watching my Sweet Peas very closely over the past seven weeks to see how they get along in my recycled milk carton plant pots with their cosy little made-to-measure fabric grow bags. I must say, I am quietly pleased with their progress.

The first Sweet Pea seedling
The first Sweet Pea seedling

I sowed the Sweet Pea seeds in mid-April – two per pot – and I was delighted to see the first seedlings germinate just five days later. Gradually over the next few days each of the seeds prodded its little green shoot through the compost.

Sweet Pea seedlings - the second one appears
Sweet Pea seedlings – the second one appears

After two weeks my Sweet Pea seedlings were all growing on well. I wanted to give the seedlings time to grow large enough to enable me to thread them onto the jute and willow garden screens I was creating as plant supports. So, for a little longer the seedlings resided on a specially-created plant shelf in an east-facing window – giving them plenty of light without too much strong sun.

All of my Sweet Pea seedlings are doing well in their air-pruning plant pots
All of my Sweet Pea seedlings are doing well in their air-pruning plant pots

In mid-May, a month after sowing, my growing Sweet Pea plants were ready for their outdoor adventure. I chose this particular time as we were enjoying a little burst of early Summer, so I knew the plants would be fine outdoors. I attached the air-pruning plant pots to the jute and willow garden screen – I’d designed the plant pots with this in mind. Now that the Sweet Pea plants were safely outdoors I gave them a good watering and added some of my ‘magic growing potion’ to give them a good start.

Air-pruning plant pots firmly secured to the gate and the Sweet Pea plants arranged on the jute and willow garden screen
Air-pruning plant pots firmly secured to the gate and the Sweet Pea plants arranged on the jute and willow garden screen

Over the last few weeks I’ve been watching over my little Sweet Pea plants. I spotted a suspicious-looking snail on a plant pot one morning so transported it to another location, far-removed from my Sweet Peas! I’ve also been regularly pinching out the side shoots that grow quite prolifically on Sweet Peas. Side shoots will be wonderful later when the plants have fully grown and are ready to flower, but for now they are taking up energy that I’d prefer to see grow into the main plant stem.

My only exception to this lately, is with one of the plants that seems to have acquired its own sneaky slimy friend! As various parts of that plant have been eaten already, I’ve decided to let nature take its course and see whether any of the evidently-too-tasty shoots actually survive!

Some visible roots in the air-pruning plant potsome visible roots in the air-pruning plant pots

There are some visible roots inside the air-pruning plant pot
There are some visible roots inside the air-pruning plant pot

Today, I also took a closer look at how the roots are progressing in their air-pruning plant pots. There is some evidence of root growth inside the remaining plastic parts of the milk carton, though none to see where the grow bag is exposed to the air through the large holes. Using air-pruning plant pots is a new experiment for me, so I am observing how plant growth is impacted with this method of growing.

I noticed there were more visible roots in the base of the air-pruning plant pot
I noticed there were more visible roots in the base of the air-pruning plant pot

The Sweet Pea plants are certainly growing on well – I think they seem to grow perceptibly each day. This morning, as I checked the plants growing on the willow screen on my backyard gate, I see they have now reached about half way up. The plants measured 24 inches high (that’s about 60 cms)!

The Sweet Pea plants on the gate have reached halfway up the willow screen now
The Sweet Pea plants on the gate have reached halfway up the willow screen now
As I'd anticipated the Sweet Pea plants are mainly growing on the outside of my backyard garden screen
As I’d anticipated the Sweet Pea plants are mainly growing on the outside of my backyard garden screen
This rather sinister-looking liquid is my 'magic potion' plant food.
This rather sinister-looking liquid is my ‘magic potion’ plant food. (Another recycled milk carton there 😉 )

There’s more heavy rain forecast for tomorrow. After that I shall feed the Sweet Peas some more ‘magic potion’. I shall make this year’s batch of new ‘potion’ soon and then I’ll share the secret 🙂

J Peggy Taylor