Cymbidium in bloom

January 17, 2012

The South of England is having it’s first real cold snap of this winter. Nothing like last winter, of course, I remember snow laying on the ground in November, all that we’ve had so far are a few frosts.

Such is the cost of electricity, I’m keeping a careful eye on the greenhouse. My method of one fan blowing all the time, and another that comes on just to supply heat, just to keep the greenhouse frost free seems to be working at present. The minimum temperature recorded on the bench was 1.1C, the fan heaters are beneath the bench and blow away from it. And the plants themselves don’t seem to be suffering – four different Geraniums (one still in flower, just), and three cacti (one died last summer for unknown reasons) are OK, while the Cymbidium has opened the first of its buds.

If we were in for a real cold snap like December 2010, when the average temperature for the month was -1C, I’d be putting a lot of bubble-wrap insulation in the greenhouse, but while its not to bad, and I’ve an awful lot of other ‘real’ work to do, that job is rather lower down on the ‘to-do’ list.

While I have been the sole user for the past few years, this year is really the first time for decades that I’ll actually be able to do anything serious in what is now fully and completely, no question about it, MY greenhouse. Although there is the continuing war with the Ivy to deal with, and to a rather lesser extent, bindweed (Convolvulus arvensis). The other thing to deal with are all the broken panes. Some of these breakages are due to the Ivy.

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So ‘back to work’ tomorrow. Well, I was working for a few hours today, and ruing the fact that I’d promised a despatch tomorrow, the first true working day of the year.

There has not that much been done over the holiday period, and it’s hard to know where the time has gone. Certainly some work, although never as much as I’d hope for at the start of the holiday season. Replacing a tap mechanism, and finding out that the old was leaking for the same reason the new one immediately started leaking was not good news, but was fixed by putting two washers in, one on top of the other. A better solution to be made soon (and replacing the whole tap is currently out of the question).

As well as the remote sensor system in the greenhouse, there is currently a power monitor on the circuit, I see from which the blower consumes about 20W,and when the heater comes in, the combined total is about 1080W. It’s used about 10kWh in a week, a significant amount, and it has been mild. It is worth noting that the background 20W usage equates to about 3.3kWh a week, or a cost of just under £7 a calendar quarter, but I’m sure it saves much more in that keeping the air circulating means less heat is required from the heater.

The Mercedes proved harder to get into the back yard driven forward than expected, being rather longer than Mother’s car that was the last one to be parked there. I’ve moved things around to get it in because the road is about to be dug up for utility pipe renewal, so roadside parking spaces will be at a premium for the month of January.

Preparing for Winter

November 26, 2011

Not for the first time in recent years, has there been a mild October and November – although I believe this year was record breaking.  A few years ago, when we were having a new roof put on the block of flats, the roofer disappeared for weeks, during that fine, mild autumn, and when he then complained about trying to finish the work in a cold wet December – he finished on 24th(!) – I pointed out the weeks of one of the best Autumns for years when he was away [doing other jobs, no doubt] – he pretended not to hear me.

Preparations this year are different and it is probably worth giving some detail as it gives an idea of the current situation chezes (sic) moi.  For I have three places to look after, still.

The Greenhouse is tricky, for the second heater appears to have developed an erratic thermostat.  Not that I thought much of the thermostat, or indeed the heater as a whole, to start with.  Using the remote sensor system, as previously blogged about, I’ve gone out late at night on more than one occasion to try and adjust the heater down, for it was holding the temperature too high.  It’s not that it really needs the heat yet (even this late in the year), but I want it working correctly for when the frost/snow does finally arrive, especially if I’m not around to fine-tune (or even, coarsely adjust) the heater.  Or get yet another heater.

As for the last two years, the old heater, just acting as a blower, is on all the time, to keep the air circulating.

If necessary, I do have a lot of bubble-wrap that I could use to make a smaller ‘greenhouse’ within the main one, and put all the valuable plants into that.

As well as moving the summer pelargoniums in last week, the Cymbidium again is in bud.  I fear that neighbours 60′ trees now overshadow the garden so much as to limit summer growth.  Unfortunately the Pleonies were killed off by the cold last winter.

This year's Cymbidium flower bud - only one so far.

One new problem is that I find I cannot reverse the Mercedes into the ‘back yard’ at Mother’s – it just will not go, and how I’ve tried.  I could get it into the garage, poking its nose out, but I’d have to clear the garage (again, it gets cleared and filled with monotonous regularity), take the doors off, and while the car’s there, not have access to anything in the car or the garage.  The reason for this is that the car needs some work to stop the rust now, before it gets serious, but it is the sort of job that could take more than a week (especially at this time of the year), as paint dried, and I cannot block neighbour’s access to his hardstanding for that long.

For the second year, I face winter with no gas central heating – a long running legal battle.  The tenants in the flat below used to be profilgate in keeping their heating on (which helped keep me warm), but I guess they’ve either moved out without telling their landlord, or else the fuel price has finally forced some economy in their living standards.  I’m really not sure which of the two it is!

Yesterday, the third skip arrived. Both brother and I were there, for we were haulling in old furnature which was either very tatty or could not be sent to the British Heart Foundation for referbishment and sell in their shops. Good furnature that went was because the cloth of the upholstery did not meet modern fire safety standards.

While only the third skip, there have been uncountable loads haulled by car to the local dump – more or less sorted of recycle and landfill. I took a load of hoarded food – best before dates in the 1980s. Dreadful job, as many tins had burst, sticky, stinking mess, but someone had to clear it. Problem is, there is more, and I had enough sarcasm from the staff at the dump for the one load I took. And they know me, (and no doubt brother) as we’ve been there so often.

In the past week, brother organised a garden company to come in and cut down the wild trees that overshadowed the house – about half way down the garden. While we were there, the neighbour turned up to thank us for doing so, as it meant they could use their barbeque until about 8pm at this time of the year, rather than 4pm before the trees were removed. Indeed, they were so keen, they volunteered to pay to have the bottom half of the garden cleared, so that they could put up a new fence. We also discussed a new fence at the bottom of the gardens, and that we would share the cost.

The garden people found a load of metal rails. I realised these must be some kind of cold frame, which the load of glass in the house suggested had to be around. So I dug it out, and today took it to Mothers. I did a quick check, and it would appear to be complete, but since I have no idea of the design, I cannot be sure. Like all of Aunt’s enterprises, if she did anything she did it on an industrial scale. This cold frame is so long the main parts just fitted into my MB (so 3m/9″ long), double sided. Still trying to work out how all the parts fit together, for if there were any plans, they are lost (along with the bolts, but that is a minor problem).

The first thing I check when I arrive at Mother’s (apart that she’s OK) is the greenhouse, as there is still a bit of light. This was the case yesterday, where I noticed the minimum temperature had been just under 2C, and the maximum about 9C. So just frost free, and with the cold air blower running all the time, no damage anywhere.

I took this photo of the Cymbidium; although there was still daylight, the camera could not record a decent image without flash, which is why the backgrounds of so many greenhouse shots taken at this time of the year are so dark.

A while ago I blogged about how I was able to keep a weather eye on the greenhouse at Mother’s. Well, today I noticed that the temperature was about 2C. So when I went up to the greenhouse, I checked the Max/Min -zero was the min. But with the air blower going all the time, it had not appeared to cause too much damage – the Cacti were OK. There were two hands of orchid flowers on the Cymbidium

This readout device is more sophisticated that the previous one, in that it will record the Max and Min itself, but I never have the instructions on me to learn how to set it up.

Although I had adjusted the heater in November, I found I had to make a significant change in the termostat. When I left, the display unit was showing about 4C, having made a peak. I’ll have to try and get Mother to keep an eye on it, as I have found that an East Wind seems to affect the heaters, causing them to go into overdrive and make it a sub-tropical greenhouse.

The snow in Mother’s road was untreated and a mess. I just got the car past her house (going uphill), then let it back into her driveway, and parked on the horizontal. On my way there I had seen the evidence of a car that had been parked, but then sliid down the steep hill and wrapped itself around a lamp-post. On the way back, I found that the car would skid at any moment, especially while driving down a steep hill, but along the flat of the valley bottom, and until I joined the Motorway back to London.

climemet

Setting up the remote sensor in the greenhouse

Two years ago I purchased an Oregon Scientific temperature display unit that had a wireless link to a remote sensor. The remote sensor was in the greenhouse. The reason for this was the terrible design of greenhouse heater, which was just a fan heater with a different thermostat. (I have blogged about this in the past, but on the previous blog whose entries I did not transfer in time are lost).

Late last year the readout unit disappeared from Mother’s living room – stolen, I fear, as most everything else that “disappeared” has since been found. The greenhouse had to go through the coldest winter in 18 years with a second dodgy heater (identical to the first that was definately no use, but newer). I set up the old heater as just a blower, and the new one to switch on and supply heat as and when.

The reason for all of this is because the greenhouse contains my pleonies, cymbidium orchid, cacti, pelargoniums and the wormery, as well as over-wintering the dahlias etc.

Anyhow, come another winter, and no idea how the “new” heater is performing;. I could not buy another unit of the Oregon type (no longer available), and the cheapest one that had a remote sensor was this ClimeMet unit (above).

Photo was taken in the greenhouse with the blower non-heater in the background. In reality the display unit lives in mother’s living room. So, from time to time I can ask mother what the temperature is, and on Sundays adjust the heater thermostat if necessary.

The Climemet unit has a “forecasting” facility based upon the barometric pressure (which it measures) as well as a barograph like display. The algorithm for forecasting is about as good as the words “storm” “rain” “variable” etc around the perimeter of an aeronoid barometer in anyone’s home. In the two days I tested it, it suggested:

Sun when it was tipping with rain
Vice versa
Sun after sunset
[Note in the photo, it is suggesting Sun, yet I needed flash on the camera to take the photo as it was dark; and the remote temperature is high as I had just taken the sensor into the greenhouse from a warmish car]

But that was not why I purchased it – it was the cheapest (indeed possibly the only) unit I could easily get with a wireless linked remote unit. In fact mother has just phoned me up, and in the conversation told me the greenhouse was at 4.4C and 82% humidity. Temp is OK-ish, but at least the heater has not gone mad, and heated the greenhouse to sub-tropical temperatures (a lost blog entry, due to heater 1).