Perhaps the following will help:
Cold temperature plants safe to 40 degrees F., except where noted:
Agapanthus
Asparagus fern 45
Aspidistra 35
Azalea
Bamboo
White bird 45
B. Fern 45
Cactus 45
Xmas cactus
Camellia
Citrus
Cyclamen 45
Cyperus 45
Date palm
D. Marginata 45
Fatsia 45
Ficus
Fuschia
Grape ivy
Hedera ivy
Jacaranda
Jade
Jasmine polyanthum
Kentia palm
Maidenhair fern
Norfolk I. Pine
Oxalis
Passiflora
Peperomia
Purple passion 45
Rhapis palm 30
Rubber plant
Sedum
Podocarpus
Sago palm
Spider plant
Staghorn fern 45
Saxifraga
String of hearts 45
Swedish ivy
Venus flytrap
Wandering Jew 45
Yucca 45
Note: This assumes that temps are allowed to drop naturally and gradually to those low temps. Plants not listed here will not tolerate temps below 50 degrees without experiencing some damage.
