The crux of the book is to look beyond the 20-odd traditional allotment crops and try some of the 2500 edible plants that can cope with the British climate.
Some, like me, are growing a few of his suggestions already - I number seakale, globe artichokes, hemerocallis and chillies on my list of "must grows" - but I was definitely keen to expand my repertoire.
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Many of Wong's selection are from subtropical parts and will have loved last summer. Despite the long, cold spring, everything quickly took off and ripened to perfection. Even varieties that can be a tad dodgy outdoors have triumphed.
But Wong's more tender varieties faced one problem. Because they couldn't be planted out until late May or June at the earliest, they had a much shorter growing season than usual. This put slow-growing tomatillos, Physalis philadelphica, at a disadvantage and they didn't work for me.
I plonked the two tomatillos you need for cross-pollination in the polytunnel, spacing them a good metre apart. Wong says to let the main stem collapse on to the ground to encourage a forest of new shoots to grow from it. This way, you'd get a much bigger crop of tiny lime-flavoured tomatoes. But talk of vigorous plants - they colonised the back of the tunnel and tried to absorb a path into their empire. The flowers were well pollinated, but the fruit took for ever to develop, so I ended up with a miserable crop of usable specimens. Given their similarity to tomatoes, perhaps I should have ignored Wong's advice and restricted growth and trained the plants up a frame, forcing them to concentrate on producing fruit.
Tomatillos are only one of Wong's thugs. I devoted part of the opposite tunnel bed to cucamelon, Melothria scabra. From tiny beginnings, it romped up a two-metre frame at a rate of knots. It's olive-sized fruits look like baby melons but taste like tangy, lime-flavoured cucumbers. Perfect for grazing while watering and a pre-dinner nibble.
Another gem is the Inca berry, Physalis peruviana. It's hardly surprising that this amber-coloured fruit, exotically wrapped in its own paper lantern, was a favourite with the Incas. The berry has a distinctive flavour, with a hint of ripe gooseberry, tropical fruit and refreshing zest. It's easy to get started in a propagator, prick out and plant after frosts are past. The Inca berry grows to around 20cm, so sits comfortably in a pot. Astonishingly, we're the fruits' only consumers - birds don't recognise them.
I also had to try Ugni molinae, Chilean guava. The fruits look like blueberries but are seemingly reminiscent of wild strawbs. Originally from the Chilean rainforests, the 50cm-tall bush can handle temperatures to -10C, but also needs some winter protection. This would make it a good patio plant.
Following Wong's instructions, I filled a 45-litre container with ericaceous compost, watered and waited. Nothing happened. I hadn't been impressed by the compost so the plant got a second chance. It started to grow beautifully in a mix of homemade compost and grit. No fruit this year, but a promise of some to come.
I'll also have to wait before sampling the Fiddlehead fern, Matteuccia struthiopteris. With the taste of asparagus, mustard and French beans, it's worth being patient.
I found New Zealand spinach was hard to germinate and proved a paltry specimen, not the trouble-free alternative to spinach. And I found another rival for chard, callaloo, tough. I'd have liked to try water celery, Oenanthe javanica "Flamingo", but the geese and slugs got there first.