Green house cucumbers

[Suziebun]

Hi everyone,

I'm just wondering if I have done something wrong this year with my green house cucumbers. They just don't seem to want to grow away. I planted them in pots at the right time and potted on once true leaves had established. I've been watering regularly and feeding since the flowers appeared. But all I have is two very small fruits so far.

Is it this extreme weather we have been experiencing? The cold then the heat? Anyone else having the same issues? Any suggestions welcome.

[Penellype]

Contrary to what people say about cucumbers, I find they wilt and get miserable if they get too hot. All the little fruits on my greenhouse cucumbers went brown and died in the hot spell. They are only now starting to produce green ones again. The outdoor plants (same variety) are doing better - they are in a slightly shaded area.

[ameno]

My cumbers, grown in my conservatory, suffer a lot when it gets too hot, too. One of them even lost its growing point during the heatwave as it was too close to the roof and fried.

[mrsbusy]

Hi. I grew Telegraph variety this year from old seed and so far they have behaved well. Last year I tried a different variety and it was very emotional - poor germination and constantly wilting and cucs going brown etc I do shade my garden greenhouse I peg some old blackout curtain lining onto the gutter if it's going to be scorching hot, and the cuc has been fine. The allotment one is at the back of the g/h and gets some shade from the toms.
overall I think although Telegraph is rather boring it is doing well.

[Bren In Pots]

Have you tried shading your GH I use debris netting but before that I used charity shop net curtains it does make a huge difference.

[fimblefowl]

I had some difficulty earlier with germination - had to do a second sowing, and suffered a bit of a pause in the warm weather, but now going great guns. (Baby F1 all female, growing in greenhouse bed)

Although it's been warm here in West Cornwall we haven't had the extremes of some parts. Max 29° outdoors on a couple of days. My greenhouse regularly goes over 35°C inside (shade temperature).

I think the problem is with unusual high temperature, where the plant hasn't developed a root system big enough to supply the moisture for the transpiration.

Embarrassing number of fruits now...

[Mark Rand]

Mine are getting wiped out by red spider mite again. I want to try some of the biological controls next year because they seem to positively enjoy drinking pesticides. Came in to the greenhouse the other day to discover that the little blighters had set up a mountaineering club:-

[Penellype]

These are my greenhouse cucumber plants - they are in the shadiest corner of the greenhouse with shade netting above.



The bottom leaves are very yellow and you can see there is a complete absence of cumbers up the main stems. Both plants have healthier growth at the top and some new flowers so I am hopeful they will produce more cucumbers. They are planted in a duogrow planter which has a large reservoir of water so they have not dried out, and they have been fed.

Fingers crossed.

[Sweet savory]

For the last 3 years I have grown Beth Alpha which produce consistently through the season. This year I have one in the GH i a large pot with a ring thingy on top and one outside. The outside one which was the back up has only produced 1 cuke so far but the inside one gives 1 or 2 x 6” ones per week which is just right for us. It has very weak tomato food in its water daily and, perhaps because it is next to the GH door, doesn’t seem particularly affected by the heat although I do let it range sideways rather than upward.

[Jungle Jane]

Usually my cucumbers are slower to produce,I’m having a good year with my plants & I think it’s because of the weather as I don’t have a greenhouse,all my plants are outside. The weather outside has been like greenhouse temperature & they’ve loved it. Melons doing well too,they’ve grown well in the heat. Maybe your greenhouse has been too hot. I’ve got a bit of spider mite on two cucumber plants on the patio,they think they’re in a greenhouse,lack of rain etc