Light: Similar to true begonias, bright indirect indoor light is necessary for this plant to thrive. Too little light can lead to necrotic leaf patches and ultimately leaf loss.

Temperature: 65-85 F

Humidity: medium to high; avoid drafty areas

Water: Keep the potting mix moist but not soggy. Water when the top 1-2” of mix dries. Check moisture 1-2 times/week as rex begonia vines hate to dry down completely.

Repotting: Repot every 2-3 years into a slightly larger container (1-2” increased diameter or depth). Use a general purpose potting mix.

Fertilizing: Either…

1. Water Application: Incorporate fertilizer into your watering cycle once per month March through September. Dilute an all purpose fertilizer (20-20-20) by half OR use your favorite fertilizer rated for houseplant use in your water.

2. Slow Release: Incorporate slow release fertilizer pellets into the top inch of potting soil every 6 months. Apply the rate indicated for indoor plants on the label. If no recommendation for houseplants is present, apply 1/4 to 1/2 the listed rate.

Cleaning: While the foliage on Cissus discolor is not shiny, it does build dust. I suggest cleaning 1-2 times per year by showering the plant with room temperature water in the sink or bathtub.

Rex begonia vine is named for the begonias, when in reality it is in the grape family! It is so named because its striking leaves and its care needs are quite similar to rex begonias.

(Listed in order of commonality…)

• Necrotic leaf spotting and leaf drop caused by low light levels

• Root decay caused by soggy potting mix

• Fungus gnats

• Whiteflies

Does the rex begonia vine bloom?

It does flower but the blooms are not notable or showy.

Is rex begonia vine pet safe?

As Cissus discolor is in the grape family, it may contain concentrations of tartaric acid found in grapes that are considered unsafe for canines to consume.

While I have not found researched information that backs the presence of tartaric acid in Cissus discolor specifically, I would still use caution with it around your dogs. That doesn’t mean you can’t have this plant in your home, I just say, KNOW YOUR ANIMAL’S TENDENCIES!