Reactivating greenhouse

[gene so]

Hello, I am retired now and have a greenhouse and also raised beds, which have been inactive for two years.
In the HIGH DESERT, I also have now gained access to 12,000 gallons of water for my drip irrigation system and really look forward to wetting these beds and also plants and trees placed on our property. What's the best way to activate these beds and what supplements like fertilizer should I use for growing vegetables? Also, how would you best deal with trees which we have planted here and have become acclimited, although they are growing very slowly?

Thank you,

 

[Marck]

Greetings welcome to the Forums.

Do you know your USDA climate zone? High desert might suggest a cold winter, but how cold is cold?
In any case, it is likely too late to start any winter crops this Winter. You could try a cold-hardy cover crop, with rye grass being the most cold-hardy, but again it is late to start that now. Perhaps the best thing now is to purchase some compost (and begin making your own) to enrich your beds for Spring planting. Consider planting warm-season crops from seed four to six weeks before your last frost date, which ever ones you want to harvest.
That is good that you collect rain water, I do the same from off my roof.
As for your (fruit?) trees, also mulch these with compost to begin enriching the soil. You will likely need to irrigate more in the warm season to encourage growth and a good crop, but increase any water amounts gradually and observe soil moisture levels to make sure that it is appropriately moist but well-drained.

Note: This is one of two duplicate posts.