Growing Requirements for Rex Begonia Plants
Rex Begonias grow best in bright, indirect sunlight coming from an east or west window.
Fluorescent grow lights
are also an excellent alternative to natural light for these plants,
and in many cases will intensify the foliage colors.
, set the plant with the crown slightly above the soil line.
They should be planted in a porous, slightly acidic
planting mix that contains some peat moss
and leaf mold
. African Violet
potting mixes work well for Rex Begonias.
Allow the top 1inch of soil to dry before watering, then water thoroughly.
Over watering can lead to root or crown rot! Wet foliage can cause problems with mildew
Always use room temperature water
when watering house plants.
should never be allowed to stand in water for more than a few hours.
Painted-Leaf Begonia plants thrive with daytime temperatures of 70-75
and 60-65 at night. NEVER lower than 60!
They require a humidity level of at least 50 percent and appreciate periodic, light misting.
Provide additional humidity by setting the plants on shallow trays filled with moistened pebbles,
or a humidifier, especially during the winter months.
Feed actively growing plants
in early spring and again in early summer with a slow-release plant food,
or every 2 weeks using a quarter strength dilution of a soluble, complete fertilizer (23-19-14)
Decrease feeding in early fall and stop altogether in the winter. Do not over-fertilize
Your Begonia Rex may go dormant in the winter and possibly drop its leaves.
If this happens, continue to water sparingly until spring when new leaves will re-appear.
If your Rex is growing where it only gets light from one side ( a window sill)
turn the pot a quarter turn each week to maintain even growth.
Foliage color may fade under low light conditions. Consider using a grow light.
Remove any dead leaves and other debris around plant regularly.
Rex Begonias enjoy spending the summer in a shaded part of the garden.
Always be sure to check for insects and pests before bringing your plants back indoors!
Rex Begonias are susceptible to attacks from mealy bugs