The Tropical Fruit Forum

Hello, Am a new to the form and seeking advise, please, on my rag-tag bunch of citrus.  Live in N. TX area (8A).  Have range from 5' down to bonsai'd ciitrus:  Imp. Meyers lemons, a Eureka, Mexican lime, owari and seto satumas, and calamondins.  Two are in 5:1:1.  Five are in various stages of blooming; my favorite scent.  However.... am having breathing issues and can't wait to take them outside.  One, the owari, just started pushing out leaves.  Last of my precious Foliage Pro stock ran out this winter so started using very diluted generic citrus fertilizer (after watering) and spraying on Superthrive.  What might be the lowest temperature I could safely take these varieties outside without significant risk to the blooming/leafing process. Calamondins are post-bloom. Will I have to take them out in graduated steps?
Thank you very much