"Spring cactus" is a common name that can refer to several species of cacti in the genus Schlumbergera, particularly the Easter cactus (Schlumbergera gaertneri) and the Whitsun cactus (Schlumbergera truncata). These cacti are known for their colorful, tubular flowers that typically bloom in springtime. Here's some information about them:

1. Description: Spring cacti are epiphytic plants native to the coastal mountains of Brazil. They have flattened, segmented stems composed of fleshy, succulent tissue. The stems are composed of flattened segments with rounded edges, giving them a unique appearance. The flowers of spring cacti are typically tubular, with multiple petals arranged in a radial pattern. Flower colors can range from white, pink, red, orange, or purple.

2. Growing Conditions: Spring cacti prefer bright, indirect light and well-draining soil that retains some moisture. They are typically grown as houseplants or in containers outdoors in regions with mild climates. Spring cacti are sensitive to overwatering and root rot, so it's important to allow the soil to dry out slightly between waterings. They also benefit from regular fertilization during the growing season.

3. Blooming Season: As the name suggests, spring cacti typically bloom in spring, although the exact timing may vary depending on growing conditions, and geographic location. Flowering is triggered by changes in temperature and day length, with buds typically forming in response to cooler temperatures and shorter days.

4. Maintenance: Spring cacti are relatively low-maintenance plants. They may benefit from occasional pruning to remove dead or damaged stems and encourage bushier growth. Repotting may be necessary every few years to refresh the soil and provide room for growth. Spring cacti can also be propagated from stem cuttings, which root easily in moist soil or water.

5. Landscaping Uses: Spring cacti are primarily grown as houseplants or container plants. Their colorful flowers and unique growth habit make them popular choices for adding interest to indoor spaces during the spring months.

Overall, spring cacti are attractive and relatively easy-to-grow plants that provide a burst of color and interest when they bloom in spring. With proper care and attention to their growing requirements, they can be enjoyed as long-lasting and rewarding additions to indoor gardens.