The window boxes looked so pretty today we decided to plonk them down beside the pond which, besides having a couple of aquatic plants literally chucked in has had nothing done to it since I dug it. We’ve spent so much time at the allotment that we get more pleasure from the early flowers where they are, than we would in the windows back at the Potwell Inn where they’re supposed to be.
The promised warm spell arrived yesterday, and so I checked the various soil temperatures. The open ground is at 10C – just below ambient, but gradually warming as the weather improves. The hotbed was miraculously running at 17C which, considering there’s no horse manure at all in it, shows what can be done with hay, woodchip and urine. Even the soil in the polytunnel has crept up to 12C after a couple of days with the cover on. The air temperatures were respectively outside 10C, greenhouse 14C until the sun got up; but the tunnel raced up to 25C while I was putting compost on the beds. I think we’re on a steep learning curve as we try to understand how the tunnel behaves, and this is the most dangerous time of the season because things go from boom to bust so quickly.
All day there were a dozen or more allotmenteers busy on the site. It’s more like a small village than anything else I can think of. We have gossip and sharing and all manner of dynamics going on – even while socially distanced – and for many of us this has been our sole human contact over the past year. Through the winter it’s been really quiet but today, lured by the sunshine, many more people showed up and started preparing for spring which, in meteorological terms is only a few days away on March 1st. Being a traditionalist I prefer the equinox because it’s that bit closer to the reliably warm spring weather. Tonight, for instance, with clear skies the temperature is likely to go down to freezing.
But the warm sunshine is more than welcome. The purple sprouting broccoli which looked all but dead last week has come roaring back to life and given us our first feed. For me that first taste is as good as the first cut of the asparagus; sweet and tender in a way that should make supermarket broccoli bow its head in shame.
When we got home we had a chat and we’ve decided to plant out the forty broad bean plants in the tunnel in case the overwintered ones aren’t much good. I have to say, though, they’re all tillering away like mad. I think they mostly make good roots during the winter months, ready to grow rapidly in spring. Having gone to all the trouble of building the tunnel we want to make maximum use of it before the tender plants go out in mid May.
So we’re as happy as could be. Tomorrow we’ll also be preparing the potato bags and they’ll begin life undercover to get the earliest possible crop.
2 thoughts on “Sunshine and then frost ..”
I’d think carefully about putting the broad beans in the tunnel. As you experienced today, sunshine can heat it up very rapidly. Broad beans won’t set pods at 70 degrees F or more, and the tunnel will reach that easily, especially if you are not there to open the doors for cross ventilation. I had a much larger poly tunnel for years (108 ft. long!) plus some smaller ones in the early years. The smaller the tunnel, the more rapid and large a fluctuation in temperature will be. That’s my two cent’s worth, but it’s based on a lot of years of growing.
All advice gratefully received – especially from someone who knows what they’re doing. My hand was poised on the root trainers when the phone pinged and now Madame is planting them out in another bed. I was born with homeopathic quantities of patience, but we’ll wait until the heat lovers are ready.