PlantFiles Pictures: Giant Granadilla (Passiflora quadrangularis), 1 by Clare_CA

Clare_CA wrote:
Annie, thanks! I'm in Southern California, and I grow a lot of subtropical plants outdoors all year long which is why I was shocked when my first one dropped dead when temps dropped below 45. Nighttime temperatures in the winter here in Zone 10 are in the mid to low 40's with occasional drops into the high 30's for a few hours in the very early morning before the sun comes up. I have many plumeria and adenium seedlings, and I have a few cold-sensitive plants and vines like this one so I invested in a portable greenhouse this year. You wouldn't think someone in beautiful Southern California would need a portable greenhouse, but I sure did. It is peace of mind, and it provides more heat and humidity than the plants would get otherwise. My other passifloras are all outside of the greenhouse and doing fine. The only other passiflora that I brought into the greenhouse is P. Cincinnata. I noticed it started drooping when we had some low temperatures at night so I dug it up, repotted it, and it is doing fine now in the greenhouse.