Q.What Is Causing The Damage To My Cucumbers
I’m growing, from seed, cucumber plants in a grobag in the greenhouse. Could you please tell me what’s causing the damage & how can I prevent further damage? Many thanks

Certified GKH Gardening Expert
It's spider mite season! These creatures are a real plague in an indoor setting.
Here are some articles that will help:
https://www.gardeningknowhow.com/plant-problems/pests/insects/spider-mite-treatment.htm
https://www.gardeningknowhow.com/plant-problems/pests/insects/spider-mite-control.htm
https://www.gardeningknowhow.com/plant-problems/pests/pesticides