Answer: While rex begonias and many other houseplants prefer high relative humidities, misting is ineffective unless you’re prepared to mist the plants several times a day. Also, rex begonias are not fond of water on their foliage.
Water the soil directly, keeping the leaves dry. Begonias also require high humidity to thrive, a challenge when growing them indoors. … You also should not spray begonias with water, especially rex begonias. Misting does create humidity, but begonias are prone to powdery mildew, so it’s better to keep the leaves dry.
While many species favour shady parts of the garden, others thrive in direct sun, and others still suit pots, tubs, garden beds and hanging baskets. Indoors or out, these tropical or subtropical treasures have been bred to suit any environment.
As a low-light plant, begonias require less intensive artificial light than many other types of plants — which grow with an artificial light as close as 3 inches from the top leaves.
Most begonias grow best in part shade (4 to 6 hours of direct morning sun a day), or filtered sun (as through trees). Most will tolerate full shade (no direct or filtered sun), but won’t be as dense and usually have fewer flowers. A few grow in full sun.
Like other indoor plants, begonias enter a dormancy period in the colder months. During this time, you’ll want to water only once every three to four weeks to avoid similar situations with the plant drowning in water. Once growth begins in the spring, you can resume the regular watering schedule.
According to Bloomscape, the most common cause of crisping leaves in a rex begonia is lack of water. … If any water accumulates in your saucer after watering, discard it. The soil should dry out between waterings but not become too dry. Low humidity can also cause brown, dry, crispy leaves in a rex begonia.
As mentioned, begonias like to be root bound. Wait to repot until the container is filled with roots. … If there is still loose soil, allow the begonia to grow more. When the plant’s roots hold all of the soil, it’s time for a transplant.
They thrive in organic, sharp-draining soil and in shade with lots of humidity. Care: Watering “on demand” (or when the soil is dry to the touch) is a great way to keep Rex begonias happy. Avoid soggy conditions, but do not allow plants to wilt.
Keep them even with the new soil line and never lower than they were before transplanting. … One week after transplanting, use a fungicide drench that targets water molds. Some Rex Begonias go dormant during the winter and lose all or most of their leaves. The plant may appear dead when it really isn’t.
But in the spring, the plant will regrow from its underground tubers that stay dormant throughout the winter. These begonias will also produce new tubers during the growing season that will then fall to the ground in autumn. These new tubers will then sprout in the spring.
The light intensity of a grow light isn’t as intense as the outdoor sunlight these plants prefer, but better than the watered-down sunlight received through a window. Providing 12 to 14 hours under the grow light equals about six hours under direct sun.
Begonias grow in moist, shady gardens where they have well-drained soil, wind protection and filtered or indirect sunlight. A typical blooming season starts in June and ends with the first frost. They are so easy to grow that a broken stem or leaf stalk stuck in soil often roots as a new plant.
A well draining soil mix is a must. Begonias do not like wet feet and will easily drop leaves if they are over watered. … Begonias benefit from an acidic soil, which the peat moss gives it. Adding some used coffee grounds to the soil will work wonders for begonias.
They do best in situations with shade or morning sun/afternoon shade. Most varieties have flowers that hang down a little, making tuberous begonias ideal for hanging baskets and window boxes rather than garden beds and borders. No matter where you grow them, make sure they have good drainage to prevent rot.
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