Discussion around the arrangements for the plants when they are in their final growing pots. It seems that potting on into pots of increasing size is recommended. Not just dumping a teeny tiny seedling into a 30cm pot and leaving it to get on with things.
Our seedlings are currently in 6cm peat free fibre pots. These will then be planted straight in to 9cm square plastic pots. We already have a million of these so it makes sense to reuse them. They also fit neatly onto the windowsill trays we have. The next pot sizes are more difficult. In the interest in reducing plastic use we will be comparing non-plastic solutions with a bulk buy of large plastic pots to use every year.
First thoughts bring terracotta to mind. It seems a lovely, old fashioned option, reminisce of Peter Rabbit and friends. However, our greenhouse staging is super wobbly aluminium trestle style benches. The staging might not be able to take the weight of 20 30cm terracotta pots filled with compost, chilli plant and watered every day. What about grow bags? Or potato sacks? Or troughs? And does each type of chilli need such a large pot? More research need.
We settle on secondhand, black plastic pots. Eek, not so PC these days but still very much out there in the market place. This is with a view to the pots being used year on year. Single use plastics are out of here. Reusing what already exists and cannot be recycled Hardwearing, easy to clean, uniform size and shape, good drainage but with excellent water retention qualities. One issue we have found with the fibre pots is that the water just evaporated right out of the sides of the pots, especially in the sun.
20L pots found on ebay, being sold on from a plant nursery. Not purchased yet as we are visiting a nursery at the weekend. They may have pots to spare…or may not. Worth waiting to see. The chillies can hang out in the smaller pots for a few more days, no peeking roots out of the bottoms yet.
It’s been a while. Busy times, you know. A quick status update shows that the February planted seeds are now in 9cm pots, they have 4-5 pairs of true leaves and are being fed ‘Chilli Focus’ plant food once a week (10mls to 1L). The March chitters are in their coir pots. Most have at least one pair of true leaves.
So what happened in the chitting experiment? Jalapeno, Bulgarian Carrot, Aji Limon, Prairie Fire and Pretty Purple were all stars. Pretty much 100% success rate with the chitting within two weeks. Somewhat confusing results from the other candidates. Scotch Bonnet gave a 50% show. Fresno sent us three germinated offerings. Serrano & Long Slim Cayenne a couple each. Still NONE from Tobago Seasoning and Go Chu. None whatsoever. Disappointing to say the least.
The conditions were a little varied but surely one or two of each seed type should have germinated? We did take a holiday to Cornwall. The seeds were kept warm in the boxes at the back of an Aga the size & colour of a fire engine. They were also kept in the light. One Serrano showed his head in that week but then a few more of the harder types followed suit. Maybe light exposure is also a factor for some chilli types?
There was also a brief foray into chemical assistance to germination. Some seed cases are tough and can be helped to soften using a couple of techniques: presoaking before chitting and using tea to soak them in. The tannins in the tea helps soften the seed case to allow more moisture in and then the root to break out. Not sure if I am committed enough to try diluted bird poo as a chemical aid. Might try scarification though.
One tiny glimmer of hope remains in the fact that lots of books, seed packets and website claim that chilli seeds can take up to 5 weeks to germinate. All remaining seeds are basking in warm sunlight during the day and in the airing cupboard at night. If any of the Tobago Seasoning or Go Chu germinate they will be the most precious plants EVER. Definitely ones to overwinter. Come on now, play nice and give me couple of the plants I really want