Overwintering Tea, Coffee and Other Tender Edible Perennials

I bought a tea plant (Camellia sinensis) and a coffee plant (Coffea arabica) earlier this year. I’m hoping, in time, to be able to produce infinitesimally small amounts of low quality hot beverages with which to underwhelm my friends and family. In the meantime, the coffee needs to come in for the winter and I’ll probably bring the camellia in too, although in time it should become large enough to overwinter successfully outside in its pot. Planting it in the ground here isn’t feasible as our soil is alkaline (pH 7.5) and camellias need acid soil. But potted in ericaceous compost, it should exist quite happily and produce leaves for green tea and salads for many years to come.

The list of plants needing winter attention is growing as my plant collection becomes more extensive and unusual, so this year I’m not convinced it’s all going to fit. Time to clear greenhouse benches and indoor windowsills, squeeze plants onto trays and cross my fingers as chillies, tea, coffee, lemongrass, lemon verbena, Vietnamese coriander, yacon, cucamelons and inca berries all come in for the winter…

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Scrubbing away a year’s grime

Fungus Gnats

My overwintering regime comes from a mixture of experience, good advice from fellow growers and intuition (aka. guesswork). Once the pots are in I’ll be treating them with nematodes as I had real problems with fungus gnats in the house last year (the annoying little black flies which buzz around the compost and can multiply disturbingly in just a few days) and using nematodes completely cleared them up. I’ve been sent a free trial pack of nematodes from the Green Gardener which can be stored in the fridge in their sealed packet for a few weeks until needed and then simply watered in the specified concentrations onto moist compost. I’ll be using them in the next few days and will report back on how successful they are this year. Here’s to a fly-free winter and lots of happy hibernating plants ready to burst into life early next spring  🙂

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My nematodes – currently residing in the fridge

Chillies

My 39 chilli plants will not, alas, all fit in the house, so the challenge has been to decide which are keepers and which will be feeding Compo (the compost heap). I’ve saved lots of seed that I will be able to sow next January and I’ve been sent an amazing array of exciting varieties by a reader of my blog who grows an extensive range and has been very generous in our seed swap. There is now no hope for me – I’m a confirmed chilli addict. Thirteen varieties this year and I suspect it will only get worse in 2017…

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The crazy chilli collection 2016!

As well as saving seeds, the kitchen has turned into a pickling factory with shallots, red onions and chillies disappearing into jars, to reappear in a few weeks to jazz up pizzas, sandwiches and salads.

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Pickled chillies to heat up cold winter suppers

Cucamelons and Yacon

I’ve tried to overwinter cucamelon (Melothria scabra) tubers a couple of times and never been successful. They’ve been left them in pots in the unheated greenhouse and brought in as dried tubers, but each winter rot has set in. This time I’m going to attempt to keep them in their pots, dry on a windowsill alongside the yacon (Smallanthus sonchifolius) and see what happens…

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I’m hoping for an early harvest next year – if I can only manage to overwinter the tubers…

 

Lemongrass

The lemongrass (Cymbopogon citratus) overwintered well last year and then I lost nearly all my plants by putting them out in the unheated greenhouse too early. Second year plants definitely grow more strongly (providing they’re kept warm), whereas first year plants don’t really have long enough to develop and multiply. So I’m intending to learn from my mistake and keep them indoors next spring until the frosts have well and truly finished.

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These little guys never really developed into mature plants

Lemon Verbena

I’ve had the same lemon verbena (Aloysia citrodora) plant for 5 years. It dies back in winter in the unheated greenhouse and reappears in spring, usually just after I’ve given up hope – I should know better by now. This year I repotted it and put it outside during the summer. It rewarded me by producing more leaves than we could use. It is such a lovely plant. Unlike lemon balm (Melissa officinalis), which has a similarly enticing scent, I find lemon verbena transfers its sherberty aroma more successfully to hot and cold drinks, cakes and spicy curries.

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The lemongrass stirring from its winter slumbers

This year I’ve dried the remaining leaves for tea over winter and I’m going to have another go at propagating from cuttings next year (something at which I have an embarrassingly bad track record).

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Makes the best tea mixed with Moroccan mint

Vietnamese Coriander

A new herb for us this year, I’ve been impressed with the easy of use and clean taste of our Vietnamese coriander (Persicaria odorata). I love the more traditional coriander (Coriandrum sativum), but the necessity of repeated sowings to cater for the speed at which it bolts is an extra job in a busy summer schedule. If the Vietnamese coriander overwinters successfully, it will allow a continuous supply of tasty leaves for cooking throughout the summer and autumn months and will have earned its place in the herb container garden.

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Vietnamese coriander – so far, so good

Inca Berries

A couple of weeks ago I was lamenting the three worst crops of 2016 – inca berries (Physalis peruviana) being one. I had an extremely helpful comment about the perennial nature of the plant and therefore the possibility of overwintering it. I have tried growing physalis for 4 years now, with very minimal harvests, so had already discounted new plants in 2017. However, I’m going to try bringing a couple of plants indoors to see if they produce higher yields in their second year. If not, they’re history – at least until I move on to warmer climes.

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My inca berry harvest

I’d love to know if anyone else is growing tea or coffee, and what the verdict is. And does anyone else contemplate paying their friends and relatives to overwinter plants on their windowsills due to a mismatch between plant collection ambitions and house size? Or is that just me?! Do leave me a comment below to let me know what other overwintering activities are going on this autumn…

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Assembled plants for overwintering – maybe we should move out?

 

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Taking Stock: The Three Worst Crops of 2016

Ups and downs are part of every growing year and 2016 has seen some exciting highs interspersed with a few depressing failures. We’ve had our first quince crop from Cydonia oblonga ‘Meeches Prolific’ with ten glorious downy fruits from our three year old tree. (Actually nine now as a passing individual delivering leaflets pulled one off the tree, presumably thinking it was an apple, bit into it, discovered it was unpleasant – being actually a quince and unripe – and discarded it in our front garden.)

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Early on the fruits are covered in a downy fur which has now nearly disappeared

 

Sweet Success 🙂

The dwarf plum tree ‘Opal’ has given us a bumper harvest and we had a basket of greengages ‘Cambridge Gage’ for the first time which were utterly sublime – easily the sweetest, most aromatic fruit I’ve ever tasted. Three of our four apples trees have produced fruit, which is actually the best we’ve ever managed as the espaliers are planted in shallow ground where we had to use a pickaxe to remove as much concrete as possible, so they have a tendency to sulk and become biennial at times. But better to have beautiful espaliers for flowers, fruit and habitat for wildlife than bare concrete fence bases.

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One of our many baskets of plums which are now filling the freezer

Allotment 96B has yielded many baskets of potatoes, trombocinos and round courgettes aplenty, runner and broad beans, celeriac, rhubarb, currants, strawberries, raspberries, beetroot, carrots, achocha, shallots and onions, all within its first six months. There’s oca and Jerusalem artichokes still to harvest and the cucumbers, tomatoes and chillies are still racing to ripen their fruit in the greenhouse before the frosts descend. Throughout spring, summer and autumn, a most satisfying harvest has been making its way onto our plates and into our cupboards in the form of jam, jellies, chutneys and pickles. But a few crops have not managed to keep up – in most cases because I’ve not paid enough attention to them – and herein lie the lessons for next year…

Pear Crop 😦

We bought a patio pear tree several years ago which grows in a pot at the sunniest end of the garden. It faces a patio cherry, also in a pot, which has started to yield a small harvest of tasty cherries each year which we protect from the birds with netting just before the cherries begin to ripen. The pear gave us five fruit in each of the last couple of years which was not too bad, considering its age and size, but this year it plumbed new depths by managing one ugly, round blob of a fruit.

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The blob

I think it has finally outgrown its pot and needs to be potted on. I bought a lovely black pot for this purpose a few years ago, but didn’t pot it on when we got it as I did with the larger cherry, as I was concerned about overpotting. If the small rootball had been placed above wet compost, it could well fail to thrive in the anaerobic root conditions this would create. So I’ll be repotting the pear after leaf-fall this autumn and feeding it well next spring to help it develop the required energy to fruit successfully in future years.

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The bigger pot at the back should help this tree thrive next year

 

Kohl Rabi 😦

Many years ago I visited Zell am See in Austria and stayed for a week in the lovely Grand Hotel where we’d managed to get a discounted room. The scenery was stunning and the wildlife breathtaking. We swam in the lake, listened to live piano music with afternoon tea on the waterfront and cycled in the countryside seeking (and finding) red-backed shrikes. Every evening we had a 5 course meal – one course was always soup – delicate, creamy soups which introduced us to celeriac and kohl rabi. Since that holiday we’ve regularly made soup with these two underrated vegetables and we’ve tried growing both at various times. Celeriac has been unsuccessful in the garden, probably because it needs fertile, moisture retentive soil in full sun and our raised beds do have a tendency to dry out. But Allotment 96B already had celeriac growing in it when we took over in April – rather old and tired, but I managed to salvage some for soup. We’ve planted more this year and I’m hopeful we might get a modest crop in a few weeks.

Kohl rabi, on the other hand, hasn’t had such an easy time of it. I’ve grown it successfully in the garden before and love the smooth white or purple UFOs – the swollen stems of the plants. This year I tried growing it on the allotment. Early on the slugs decided they deserved kohl rabi more than me and they attacked it in earnest. They ate into the developing stems, hollowing the circles and eventually killing the plants. I had a spare bit of copper tape with which I encircled the base of one plant, buying it a little time. But eventually, it too succumbed to the relentless ninja slug patrol.

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There are beets and courgettes, but no kohl rabi this year – this photo is from 2014

I’m sad there will be no kohl rabi this year, as much for the beautiful form of the vegetable, as for its taste. But next year I’m sowing both the purple and white varieties. I’m planning a special area in the raised beds in the garden where I can raise a kohl rabi army and defeat the slugs through increased vigilance and special vegetable training sessions.

Inca Berries (Physalis/Cape Gooseberry) 😦

I’m a sucker for the weird and wonderful (as you probably know if you’ve been following the blog) and I first grew inca berries four years ago. Prior to this year I’ve always grown them from seed and they’ve developed late and produced a poor crop. This year I decided to treat myself to plug plants in order to get bigger specimens sooner. I potted on the six plugs when they arrived and continued to repot and feed them throughout the spring. I pinched out the tops of three and left the others to see if encouraging them to branch would help crop production. Now, five months later, I have six lanky, healthy looking plants (some branching, some not) with about 25 fruits between them. Not enough to make the Mrs Beeton jelly recipe I’ve been hankering after unfortunately. Don’t know why mine always grow so tall and produce so few fruit. Maybe the greenhouse doesn’t suit them due to reduced light levels, although I’ve tried them outside in previous years and had no fruit at all. Maybe I need to pinch them out more during the season? I’d be grateful for any ideas here please – the jury’s still out on whether I’ll bother again next year.

Inca berries have attractive flowers and fruits

I guess I’m not alone in feeling fed up when I’ve nurtured a plant for months and planned what I might do with the harvest, only to get little or nothing at the end of it. Sometimes I wonder whether it’s worth it and whether it might just be easier to stick to more conventional crops or buy all my fruit and vegetables from the shops. Then I watch the kids picking Chilean guavas from the front hedge on their way home from school and suddenly it’s all worth it.

Chilean guavas ripe for the picking

If you have grown any of these edibles with more success than me (not difficult), do leave me a comment or some advice below. Or maybe you’d like to share some of the successes or crop disasters of 2016. It’s always great to read about what other gardeners are up to. Thanks  🙂

If you’ve enjoyed reading about my growing experiences this year, you can follow the blog to get updates on the rest of my harvest and my plans for 2017 which will include my new allotment cutting flower bed and a revamp of the border in the back garden…

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