Beware the stinging nettle. These bushes only seem to grow to about a metre in height, and without the red flowers, are somewhat inconspicuous and look very similar to a number of other harmless bushes - but these are very nasty. Just after Christmas I brushed past one (after being told that they were stinging nettles but, alas, didn't take enough care). The pain was quite severe for around 10 minutes, it went away and that, I thought was the end of it. However, about 10 days later the area where I was stung became inflamed, raised, swollen, painful as well as itchy. I used a topical antibiotic cream and took antihistamines but these seemed only to be mildly effective. It took a week before the area on my leg was more or less back to normal so I assume I had a delayed allergic reaction. I have tried to identify this plant on the net but haven't been able to track it down. Since this happened whenever I walk near a bush I inspect it very, very closely. On the photo you can see those nasty, fine hairs all over the leaves and stems.