How to grow and care for Sunglow Plant (Red Crassula) Indoors

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Houseplant, Sunglow Plant, Red Crassula

Botanical name: Crassula coccinea 
Synonym Rochea coccinea
Family: Crassulaceae

Sunglow Plant also called Red Crassula is a neat succulent plant, about 1-1.5 ft high with showy clusters of red tubular flowers. The stems are clothed with leathery triangular leaves. It needs plenty of light, good ventilation and plenty of water during the growing period. The plant is native to Eastern Cape of South Africa. There are two main varieties that are popular as houseplants. These are alba which bears red flowers and bicolor which bears red and white flowers.

How to Grow Sunglow Plant

Light

Sunglow Plant grows best under bright light with some direct sunshine. Protect the plant from too hot sunshine to prevent sun scorch. Learn how to ensure your plant receive adequate light on this guide on understanding light for houseplants.

Water

Water Sunglow Plant thoroughly during the growing season and allow the soil to dry out between waterings. Reduce watering during the cold months. Avoid waterlogging as it can lead to rotting. Learn more on how to water houseplants.

Temperature

Cool to average warmth with a minimum of 120C is ideal for Sunglow Plant.

Humidity

Average room humidity is adequate for Sunglow Plant. The plant does not require high humidity; it is a drought tolerant plant.

Feeding

Feed Sunglow plant with a balanced water-soluble fertilizer every 3-4 weeks when the plant is actively growing (during the growing period). With hold feeding in the dormancy period.

Pruning

Pruning Sunglow Plant requires removal of dead leaves and flowers to maintain the plant neat and tidy.

Repotting

Repot Sunglow Plant during the growing period only when the plant becomes root-bound. Use a shallow pot one size larger than the previous one and ensure that the pot has a drainage hole. The soil should loose and free-draining to avoid waterlogging which can lead to root-rot.

How to Propagate Sunglow Plant

Propagate Sunglow Plant from stem cuttings at the beginning of the growing period. Allow stems to dry (callous) for 2-3 days before inserting in moist free-draining soil. Ensure the pot has a drainage hole to prevent waterlogging as it can lead to rotting. Place the set up in a warm shaded place. Maintain the soil slightly moist and avoid waterlogging.

Common Problems in Growing Sunglow Plant

  • Leaves wilted and discolored
  • Overwatering during the cold period is the cause of wilted and discolored leaves in Sunglow Plant. Reduce watering in the cold season to maintain the soil slightly moist.

  • Brown dry spots
  • Brown dry spots in Sunglow Plant are due to underwatering during the hot season. Water thoroughly during the hot period when the soil begins to dry out.

  • Brown soft spots
  • Brown soft spots in Sunglow Plant are caused by Leaf spot disease which is enhanced by poor air circulation. Ensure there is free air circulation at all times.

  • Elongated stems and misshappen
  • Too much water during the cold season or too little light during growing season is the cause of elongated stems and misshappen in Sunglow Plant. Reduce watering during the cold season and ensure the plant receives bright light during the growing season to prevent it from growing towards the light source.

  • Rot at base followed by yellowing and shriveled leaves
  • Rotting plant base followed by yellowing and shrivelled leaves in Sunglow Plant is an indication of basal stem-rot disease which is brought about by overwet conditions. Avoid overwatering, ensure the pot has a drainage hole and the soil is free-draining.

  • Pests
  • Common pests in Sunglow Plant are Mealy Bugs and Scale Insects. Isolate the affected plant to reduce spread to other houseplants.

Toxicity

Sunglow Plant aka Red Crassula is mildly toxic to both humans and pets. If ingested it may cause nausea, vomiting and diarrhea. Keep th plant from the reach of children and pets.

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