Living fossils

I found these strange, spore-producing shoots of field horsetail Equisetum arvense on a grassy bank near Durham city this afternoon. Known as the 'devil’s guts' to gardeners, on account of its devilish creeping underground rhizomes and resistance to herbicides that together make it almost impossible to eradicate, it produces this yellowish spore stalk first and green shoots only after these have shed their spores and withered away. Field horsetail grows to a height of around 30cm., but back in the Carboniferous, about 300 million years ago, plants that were 10 metres tall but otherwise identical flourished in steamy primaeval swarms. Like present-day horsetails, these gigantic ancestors’ stems were rich in silica and so were slow to decay, leaving excellent fossils whose basic features are almost identical to those of their present-day descendants. When I tapped the sporangia pictured here they release clouds of spores that drifted away on the wind......and if you want to see what these remarkable spores look like visit this post on my other blog, Beyond The Human Eye

Disaster averted

I discovered this gardener’s nightmare when I searched behind the greenhouse for some modular seed tray inserts, ready for sowing this season’s vegetable crop. Every cell in the inserts was crammed full of hibernating snails of every size, from infants to grandparents. In a few weeks' time these would have ravaged the very seedlings that I was about to germinate, then would have set about mating and laying eggs for the next generation of snails. Now they’ve all been transported to a local copse, to begin a new life where they belong – in the wild, away from my seedlings. So, if you’re a gardener, here’s how to conduct an early season pre-emptive strike against the snail menace: leave some old seed tray inserts (they seem to favour the 24 cells per tray size) in likely snail hibernation sites, then check them in March for sleeping snails. It could help to avoid a lot of disappointment later in the spring, after you plant out your seedlings.

Winter's last flurry?

Down on the valley bottom in Weardale there are lambs and primroses. Up on the fell tops in upper Weardale it snowed last night and the slopes of Burnhope Seat are white again. Winter isn't surrendering without a struggle.