Guavas, I'm told, are hardy and, having ignored mine for over five years, I believe it. (On the upside, had I nurtured it, it might be twice its height by now and I wouldn't be able to reach the fruit.)
They tolerate a wide range of temperatures, which is why I can now swap notes with a friend in Christchurch on the comparative results of growing guava in the Far North and the Deep South. She says hers has occasionally had some leaf damage in really frosty weather, but that's about the worst of it. She is, however, anticipating it may resent the replacement of its well-drained garden bed with a whole lot of gluey, stinky goo as a result of liquefaction. I've offered to adopt it should it want to leave home.
Guavas like free-draining soil and lots of sun, and the shady spot mine occupies may explain why it's taken five years to get to a height where it's finally captured my attention.
Call me opportunistic, but now that I've discovered I like the fruit, I'm going to nurture the tree. I'm committed to giving it a feed of fertiliser with a high nitrogen content and pruning it in early spring.
The guava is self-fertile, so you need only one, but I think I might plant a second one anyway, since I missed the first one's childhood altogether.
Guava trees produce small, white flowers in late spring - in fact, mine's probably been doing so for years, if I'd only noticed. They fruit from about mid-April until June-July, depending on whether you're north or south, and the fruit are ready when they're deep-red and soft to the touch. Eat the unripe ones at your peril - your cheeks may never reinflate.
Guava, Apple and Anything Crumble
Most guava recipes I found on the internet were for complicated jams, jellies and chutneys. One, however, was dead simple. Chuck them in a saucepan with a little water (I used the three mouthfuls of chardonnay left in last night's bottle instead) and a sprinkle of brown sugar. I added the juice and rind of a lime - just to get rid of one more of the little green suckers - and stewed the mixture for about 10 minutes. I sliced apples, kiwifruit and feijoas into an ovenproof dish, poured over the guava pulp, sprinkled with a mixture of brown sugar and cornflour, and covered the fruit with crumble. I baked it for about half an hour and we ate it with far, far too much whipped cream. The guava turned the fruit a beautiful shade of red and both the look and the taste were truly fabulous.
If you want the exact recipe, email info@gardenpress.net. The crumble, from Annabel Langbein's The Free Range Cook, is to die for. Try it only if you want to be a really fat person who eats crumble every night.