If you want to use rock wool boards to grow cucumbers, then your idea can still be recognized, because there are already precedents of growing vegetables with rock wool. Of course, what is used is rock wool tubes, not rock wool boards. And for growing cucumbers with rock wool, the following aspects need to be noted.
1. Growing cucumbers requires a lot of heat, a lot of nutrition and strict hygiene.
Greenhouse cucumbers require high temperature, very high humidity and a minimum night temperature of 18C/60F to grow successfully. They do not like too much temperature fluctuation between day and night, which is not conducive to the growth of cucumbers.
2. Cucumbers are very nutrient-hungry, but not so picky about soil. Therefore, people plant them in rock wool blocks containing a lot of nutrients, which can be not in soil. Of course, attention also needs to be paid to the pipes leading to the rock wool next to each plant.
3. Cucumbers are very susceptible to pests such as whiteflies and spider mites. A better approach is to carry out very careful disinfection between crops and adopt strict barrier hygiene technology to keep bugs out.
By achieving the above three aspects, then growing cucumbers with rock wool can complete the basic requirements. Of course, there will still be many problems in the planting process that need to be handled according to the situation. This article only provides reference.
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