Thanx for the tag @Mosca.
A lot of growers overlook the hardening phase. This is the transition from indoor to outdoor. I start out outdoor laddies in door March 1. Tomorrow 
Once the end of May rolls around we start the transition. At this time you want to slowly introduce your plants to the outside would. The natural environment is way different than indoors.
Start by first setting up some sort of shaded area. This will be used to set the plant under for a few hrs out a time. One the first day set them out for an hr. Over the first week set them out during the day for longer periods but then back indoors at night.
The second week ‘if the weather allows’ keep them out for their first full night. Still under the shade tarp.
Once the plants are out for the entire night and day while under the shade tarp keep them in the same location and remove the shade tarp. If the weather is somewhat bad you can use a clean greenhouse tarp. You just want to allow more natural light to hit the plants. Remember keep them in the same location. They are somewhat adapted to the wind chill in that spot during the night already.
I used a clear tarp this last round due to heavy mist in the morning.
Next move the plants to the final resting spots. But…… don’t transplant yet. Set them there for a few days to get use to that location. Morning sun and evening light. This will all play a roll in the transition.
Remember the goal is to reduce overall plant stress so we can push forth with veg.
Once the plant has sat in this location for a night or two it’s time for the transplant. Take your time with this step as it’s your tender loving care that will allow these little babes to grow into big plump mamas
