I purchased a 9 x 4 portable greenhouse for cold protection around 2 goldfinger bananas, also wrapped with burlap and added a small space heater.
https://www.amazon.com/dp/B08CRQZJNB?ref=ppx_yo2ov_dt_b_product_details&th=1Barbados cherry- Frost blanket with 4 poles. Xmas lights inside.
Sweet almond- Blankets and hay
Cold sensitive citrus - Burlap wraps around trunk. Frost blankets with 4 poles
Cherry of Rio Grande. Frost blanket, xmas lights
I put cold sensitive plants in shed
My older citrus I only put hay around trunk and watered all cold sensitive trees well. Not much else I can do.