Bubble succulents, known for their distinctive, often rounded foliage, offer a unique aesthetic. Their unusual shapes and vibrant hues make them a captivating addition to indoor spaces or arid gardens. These plants are easy to care for, suitable for both novice and experienced enthusiasts. Their charm lies in their sculptural forms and leaves that mimic tiny, plump bubbles.
Understanding Bubble Succulents
The term “bubble succulent” informally describes plants with swollen or spherical leaves. The most recognized varieties are Crassula ovata cultivars like ‘Gollum’ and ‘Hobbit’ jade plants. These Crassula varieties feature tubular, elongated leaves that often curl or have a cup-like indentation, resembling alien fingers or small trumpets. Their foliage can develop reddish tips in sufficient sunlight.
Other succulents sometimes called “bubble succulents” include Haworthia cooperi, known for its translucent, plump, spherical leaves in rosettes, and Monilaria obconica, which produces spherical first leaves followed by elongated, ear-like second leaves.
Essential Care for Bubble Succulents
Caring for bubble succulents requires understanding their environmental needs.
Light Requirements
Bubble succulents thrive in bright, indirect light. A south-facing window indoors or filtered outdoor sunlight provides ideal illumination. Insufficient light causes leggy growth and loss of vibrant coloration. Direct morning sun enhances reddish hues on leaf tips. However, intense afternoon sun, especially in summer, can scorch leaves. Gradually acclimate plants to brighter conditions to prevent sunburn.
Watering Practices
Proper watering is important for bubble succulents, as they are susceptible to overwatering. Use the “soak and dry” method: water thoroughly until it drains, then allow the soil to dry completely before the next watering. Overwatering causes root rot, indicated by mushy leaves or a foul smell. Underwatering leads to shriveled or wrinkled leaves. Watering frequency varies seasonally; more water is needed during spring and summer growth, less during fall and winter dormancy.
Soil and Potting
Well-draining soil is essential for bubble succulents to prevent root rot. Use a specialized succulent or cactus potting mix, often containing sand, perlite, or pumice, for drainage and aeration. A custom mix of equal parts potting soil, sand, and perlite also works. Pots must have drainage holes. Terracotta pots are often preferred as their porous nature helps absorb excess moisture, aiding drying between waterings.
Temperature and Humidity
Bubble succulents prefer moderate temperatures, 60-80°F (15-27°C). Some tolerate brief periods as low as 30°F (-1.1°C), but they are not tolerant of prolonged frost. Sudden, extreme temperature fluctuations can stress the plant, leading to leaf drop or dormancy. These plants are suited to average indoor humidity and do not require high humidity. Good air circulation is beneficial, especially in humid environments, to prevent moisture accumulation.
Fertilizing
Bubble succulents have low fertilization needs. Fertilizing once or twice during their active growing season in spring and summer is sufficient. Use a balanced, diluted succulent or cactus fertilizer. Over-fertilizing can lead to nutrient burn, manifesting as brown leaf tips or stunted growth. Avoid fertilizing during fall and winter dormancy.
Propagating Bubble Succulents
Propagating bubble succulents creates new plants, commonly through stem or leaf cuttings. Stem cuttings are easier and faster. Select a healthy 2-4 inch segment with at least two sets of leaves. Remove lower leaves to expose the stem. Allow the cut end to callus for 3-7 days to prevent rot. Once calloused, insert the cutting into well-draining succulent soil, burying about an inch for stability. Do not water immediately; wait one to two weeks, then water lightly when the soil is dry.
Leaf cuttings are a slower but viable method. Gently twist a healthy leaf from the parent plant, ensuring the entire base is intact. Allow the leaf to callus for a few days in a dry, shaded area. Place the leaf flat on well-draining soil or slightly insert the calloused end. Keep the soil lightly moist by misting, avoiding overwatering. Roots and a new plantlet will emerge from the leaf’s base, and the “mother” leaf will shrivel as the new plant grows.
Troubleshooting Common Problems
Bubble succulents are resilient but can face issues from improper care. Yellowing or mushy leaves usually indicate overwatering, leading to root rot. Shriveled, dry leaves suggest underwatering. Adjusting the watering schedule to allow soil to dry completely between waterings resolves these issues.
Leggy growth, with stretched stems and widely spaced leaves, signals insufficient light. Move the plant to a brighter location, like a south-facing window, to correct this. Brown spots or scorched leaves suggest too much direct sun. Provide afternoon shade or filter intense light to prevent damage. Pests like mealybugs, spider mites, or scale insects can infest plants. Treat affected areas with insecticidal soap or a diluted solution of water and dish soap to manage infestations.