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Latest posts by blairs

high winds and greenhouses

Posted: 28/10/2013 at 14:23

You can get Z shaped clips that you screwdown to seal polycarbonate glazing AJK.

Greenhouse Heating

Posted: 28/10/2013 at 14:20

Even if there was such as thing as solar powered heating, for 3-4 months of the year daylight duration, angle and strength would render it useless. The coldest period is 3am-7am in winter. On Dec 21st it can be daylight only from 9am-4pm, so solar will never work.

If you mean some sort of heat exchange using water warmed by the sun, then again the above with the added complication that the water will freeze to some extent.

An electric fan heated with a thermostat set to 7C is probably the best value given that paraffin produces so much moisture and you can kill more with botrytis than cold.

Bird of Paradise not flowering

Posted: 27/10/2013 at 21:36

They like being pot bound, so perhaps you are being too kind to the Strelizia. Do you know what variety it is? Am guessing it is not Nicoli.

high winds and greenhouses

Posted: 27/10/2013 at 21:31

Good advice ZG

high winds and greenhouses

Posted: 26/10/2013 at 23:01

Close the doors, windows, vent. A gust in the right direction has the parchute effect and the whole thing can explode. I have seen that happen to soild metal greenhouses. You are advised to site greenhouses in sheltered spots for a reason.

What to do with a Datura

Posted: 26/10/2013 at 22:56

The pic looks like a Brug - you cut them down Dove to the main stem and they regrow quickly in spring. They can stay in the conservatory or make them go dormant over winter. A 3 foot one would be best barely watered in a conservatory. Repot, feed and water,feed,  water, feed, water in the summer. Did I mention they like water and feed in warm weather? They are thirstly plants. A lot of pests like thier leaves, though they are poisonous.

What to do with a Datura

Posted: 25/10/2013 at 19:53

Datura and a Brug are different:


I know little about Datura but I can advise overwintering Brug's


Posted: 25/10/2013 at 10:10
SFord wrote (see)

You don't say how old it is or whether you have moved or re-potted it recently.  I have found that agapanthus usually sulk for a year or two if you disturb the roots or if its a partularly young plant.  Living in Cornwall I tend not to bring them in over winter.  The foliage does die back but the flowers were fab this summer.

Agree with this. If you have young Agapanthus then they put down roots first then top growth afterwards.

Spring bulbs help

Posted: 24/10/2013 at 12:29

If you catch the shooting bulbs early enough then you can bury them deeper. If they are above 1 inch then I would leave them as is, perhaps mulch them with bark if we get seriously cold winter weather.

Planting in pots has issues as when you transpant them you will damage the emerging roots and pots will be warmer than the ground, so will spur on growth. I would leave them in packets for 2 weeks as by then it will be colder.

planting sorbus

Posted: 22/10/2013 at 14:45

Now as they still need some water over winter and if planted now will put out roots.

Are places selling bare roots now? They normally wait till the first frosts force the trees into dormancy, which is late November. I would use your nail to take a bit of bark off the trunk to check the tree is green and healthy.

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