American Begonia Society – Red Pigments. Pink, red or purple color in leaves is caused by the presence of pigments called anthocyanins. In the spring when temperatures rise and light intensity increases, the red pigment forms on the leaf edges of many plants.

Similarly, why are my begonia leaves turning brown?

Too much sunlight can lead to fading and wilting of the leaves, and continued excessive sunlight can cause the edges of the begonias‘ foliage to turn brown. Begonia plants do not like very wet soil, and too much soil moisture can cause the plants' roots to rot.

Likewise, what's wrong with my begonia? Begonia plants can collapse and die from advanced stem rot diseases. Rhizoctonia fungus causes fine webbing and sunken, brown, dry areas of stem rot at the soil surface. Botrytis stem rot symptoms include a soft, brown rot in begonia stems, with gray, fuzzy Botrytis spores in the rotting stem tissue.

Similarly one may ask, how often should begonias be watered?

The main rule of thumb for watering begonias is to not let the soil dry out completely. Stick your finger into the soil, and if it dry to your first knuckle, it's time to water. Avoid overwatering, which will cause the foliage to turn yellow and eventually drop.

Why are the leaves on my begonia turning yellow?

The most common reason begonia leaves rot is too frequent watering. Begonias are succulent plants with stems that are mostly water, which makes them very sensitive to moisture and fungus. Overwatering begonias causes their leaves to turn yellow, a process called chlorosis.

Related Question Answers

Should you deadhead begonias?

do not require deadheading to thrive. Rather they self-clean by dropping spent flowers on their own. However, if you want to clean up your begonias a bit faster than nature does, or if you want to encourage the plant to produce more stems, you should get into the habit of deadheading.

How do you bring back begonias?

Take the following steps to save your potted tuberous begonia tubers: Remove plant from pot before hard frosts occur. Cut back most of the top of the plant, leaving the ball of roots and soil intact. Place in a dry, cool storage area (a basement or garage) and allow the tubers to cure for several weeks.

How do you save Overwatered begonias?

Wilted, overwatered plants are not always a lost cause.
  1. Move your plant to a shady area even if it is a full-sun plant.
  2. Check your pot for proper drainage and, if possible, create additional air space around the roots.
  3. Water only when the soil is dry to the touch, but do not let it get too dry.
  4. Treat with a fungicide.

Do begonias like sun or shade?

Morning sun (and a little afternoon shade) is perfect. Wax begonias can tolerate more sun than other types, and the ones with bronze-colored leaves are the most sun-tolerant of all. Tuberous begonias prefer more shade and less heat, so we often see them on display in late summer. Soil: Light, rich, humusy soil.

How do you care for potted begonias?

Once appropriately placed in the flower bed or hanging basket, deadheading spent blooms and keeping the soil moist is the basis of annual begonia care. Watering correctly is important in the care of begonias. Soil should remain moist, but not too wet. A well-draining soil or potting mix simplifies this task.

Should I mist my rex begonia?

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.

Do begonias like wet soil?

Ideal begonia care requires well-drained soil that has been amended by the addition of organic matter, such as compost and peat moss. While they enjoy humid conditions, they don't likewet feet;” soggy soil can cause their roots to rot.

How do I know if my begonia has root rot?

When begonia stem and root rot infects your plants, they are likely to show a variety of symptoms. These include darkened foliage, blackened and rotting roots, rotting stems just above ground level, and collapsing crown. Stem and root rot of begonia usually kills seedlings by damping off.

Do begonias do well in pots?

Wax begonias tend to be compact and upright and are usually grown outside as annuals. Begonias can be easily and successfully grown in containers if you follow some general rules: use a pot fitted to the size of the plant, use the appropriate soil and provide the right amounts of sunlight, water, food and care.

Can begonias tolerate full sun?

Most begonia varieties prefer partial shade and indirect sunlight. Even Rex begonias (Begonia rex, hardy in USDA zones 10 through 12), with their decorative, swirling leaf designs, prefer a partial shade location. Their intricate leaves do not need a full sunlight position for optimal photosynthesis.

Do begonias come back?

Begonias are annuals, so they won't grow back each year. Therefore, each year you will have to replant them, typically in mid spring. Begonias don't handle cold temperatures and frost well, so wait until at least one week after the final frost of winter to plant them.

How do you fertilize begonias?

Most begonias prefer their soil well-drained, their location partially shaded and their fertilizer well-diluted.
  1. Work a balanced fertilizer into the soil at planting time.
  2. Dilute a balanced liquid fertilizer with 1 part fertilizer to 3 parts water.
  3. Reduce the fertilizer application in late autumn to one dose a month.

Why is my rex begonia wilting?

Overwatering and underwatering can both cause wilted, discolored foliage. According to the University of California IPM Program, improper irrigation is among the most common causes of damage in plants. Water your rex begonia deeply, allowing the soil to become almost completely dry between waterings.

How do you treat begonia root rot?

Begonia-Stem Rot
  1. Remove and destroy infected plants, increase ventilation, and avoid moistening leaves by watering.
  2. Sterilize soil or media before replanting.
  3. Do not overwater, and keep water-hose ends off the ground.
  4. Be careful not to bury begonia seed too deeply when planting.
  5. Do not overfertilize.

How do you take cuttings from begonias?

These plants will not produce accurately from seed, but like many other begonias, they propagate easily from leaf-tip cuttings. Take cuttings without blooms but at least two nodes and bury them in the moist potting soil mix, then leave in a warm, semi-shaded spot until new growth appears.

Why is my begonia dropping flowers?

ANSWER: Bud drop on tuberous begonias may be caused by one of two conditions: either the plants are receiving an uneven supply of water (too much or too little), or they have been subjected to sudden and dramatic temperature changes. While you can't do much about temperature fluctuations, you can control watering.

How do you water Begonia rex?

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. Give Rex begonias a diluted dose of organic, soluble food every four to six weeks during the growing season.

Why are the leaves on my begonia turning brown?

Too much sunlight can lead to fading and wilting of the leaves, and continued excessive sunlight can cause the edges of the begonias‘ foliage to turn brown. Begonia plants do not like very wet soil, and too much soil moisture can cause the plants' roots to rot.