Final Harvest

Summer is officially at an end, the clocks have changed, the leaves are falling, the first frost has been seen and it's time to bed the chillies in for winter.

As you may have seen from the previous post I've been busy finishing off the chilli cave to house the plants through the colder months, it was now time to give them a severe pruning and rehouse them.

Before this could take place I had to harvest all of the remaining fruit, ripe or otherwise.

The Chilligrow plants before their haircut...

...and after a short back and sides.

It was time to call an end to the hydroponic experiment. Despite having produced an impressive amount of fruit, "the Gurgler" had stopped working properly in recent weeks with the water not draining fully back into the reservoir.  I suspected that this was because the roots had grow so vigourously that they were blocking the outlet for the pump.  Upon pulling up the plants, my suspicions were confirmed with the most impressive root growth I've seen on a chilli this year.  Next year I'll use a modified system with the plants growing in root pouches to contain the roots and stop them fouling the flood inlet and outlet.

The results from the Gurgler - a Peach Habanero and an Orange Magnum Habanero with impressive roots.

Since I have several Orange Habs already overwintering I haven't bothered trying to rescue that plant but the Peach Hab has been potted on into compost to see if it survives the winter.

The chillies in their new home

The Chilligrows and assorted pots basking in the CFL lights

Some of the plants in Root Pouches.  These have performed well this year and I'll certainly be using them again.

The collected chillies from the harvest over half-filled a large shopping bag.  Not up to commercial grower standards but more than respectable for my little setup.

Some of the final harvest, ready for sorting.

Many of the chillies were still green when picked so they're now on windowsills waiting for the winter sun to ripen them up before they're chopped and frozen or strung up to dry.

This year was all about testing different habaneros for the best flavour.  I grew Magnum Orange, Fatalii, Peach and Squat Frog varieties, alongside the milder Scotch Bonnets and the much, much hotter Trinidad Scorpion.

The hotter chillies - L to R: Trinidad Scorpion, Yellow Scotch Bonnet, Fruit Burst Hab, Orange Magnum Hab, Squat Frog, Fatalli and Peach Hab

Once everything has ripened as best possible, I'll start the sauce making process.  It'll be trial and error matching each variety up to an appropriate flavour so expect plenty of culinary experimentation and no shortage of burnt mouths.

The Chilli Cave

In the UK chillies are usually grown as annual plants and discarded at the end of each season. However, in their native habitats they are perennials and over the course of years can grow to the size of small trees. With careful nurturing, chillies can make it through the unpredictable UK winters and into the next spring.

The advantage is that the plants will be fully developed in plenty of time for flowering and fruiting and therefore have a longer season and, hopefully, be more productive.

This is particularly useful for the slower-growing superhot varieties such as Habaneros, Nagas and Scorpions, some of which are only hitting their peak just before the first frosts arrive.

In order to prepare the plant for overwintering you need to put the plant into a dormant state.  This can be achieved by cutting back the majority of the growth, just leaving 6 inches or so of main and a few side stems. Cut back on the feeding and watering and leave in a sunny spot with a temperature of around 10-15 degrees centigrade. 

There are more than a few people out there who can offer far better advice than I can so I'll let them do the talking;

Clifton Chilli Club has a great video here.

And chilli-master Matt Simpson offers his sage advice here.

Before I was able to overwinter my most valuable plants, I needed somewhere to store them.  Without enough windowsill space, I had to resort to artificial lights.  I've got a couple of 125W CFL (Compact Fluorescent Lamp) units which although not bright enough to grow a plant throughout the season, are certainly capable of overwintering one.  If I could find a suitably frost-free spot then I would be ready for the winter.

The garden shed was the perfect size but was a little damp and draughty so I would need to seal and insulate before I could install the necessary benches and lights. Thus began the most over-engineered project I've ever undertaken in the name of hot sauce...

Floor is sealed with membrane paint and the underlay is added.

Laminate flooring going down. 

The floor is finished.

New rafters for the ceiling and the first of the plywood panels go up.

The existing light is above the new ceiling so a fluorescent fitting is added to the ceiling.

Meanwhile, battens are screwed to the outside walls, and MDF panels are fixed over Rockwool insulation. 

Cramming insulation into all the gaps that might let in a draught.

The end wall is completed.

Plenty of insulation is added into the ceiling space and last panels screwed into place.

Side wall panelled and yet more insulation going in. 

Finished boxing in the window.  This will have a reflective blind over to keep the light in at night. 

One coat of white paint over everything. Another to follow.

Reflective film is added to the walls.  The diamond pattern on this material helps scatter the light, preventing 'hotspots'.

The blind is added over the window. This can be easily removed in the spring when the room can revert to being a tool shed.

Benches were made from some spare worktops and some scrap 2x4 lumber.  To test their strength I jumped up and down on them - if they can cope with me then the chillies will be a breeze.

The grow lights were then attached to chains, fixed to the ceiling with cup hooks.  This is a quick & easy way of altering their heights to adjust to the growth of the plants.  because CFL lamps don't produce much heat, the bulbs can be placed very close to plants if needs be.

The finished room.  The shelving in the middle will hold the propagators with some additional fluorescent strip lights.

 So the room ready to use.  I need to check the temperatures with a maximum/minimum thermometer to determine how much heating is needed, if any. Humidity may be an issue when the plants start growing in spring but by then it may be mild enough to allow an air vent or fan to be fitted without fear of freezing the plants.

Next step - relocating the chillies...