A while back now, (on a very cold January day, I recall) I went to a zoo.  In fact, in recent years I’ve been to several zoos, but in the shop at this particular zoo (somewhere near Cambridge) I found a package marked “Grow Your Own Insect Watertrap”.  Attracted by the prospect of a new horticultural challenge, and the cool ‘EATS INSECTS’ label, I made a purchase.       As it turns out, I needn’t have gone all the way to the cold zoo somewhere near Cambridge because the address on the back of the packet tells me that the supplying company is just 2 miles from my house.  You live and learn.       Anyway, for various reasons I’ve not yet got around to embarking on the project.  I think possibly I was subconsciously scared by the fact that on the scale of things this Insect Watertrap has ‘More Care’ label, but my excuses include a lack of time, and “not being the right time of year”.       But now it is the right time of year, and I am going to postpon...