Pericallis plants, often known as Florist’s Cineraria, are cherished for their vibrant, daisy-like blooms that bring a burst of color to indoor spaces and cool-season gardens. These cheerful plants, native to the Canary Islands, display flowers in a wide array of shades including blue, purple, pink, red, and sometimes bi-colors, frequently with a contrasting eye. While generally grown as annuals, Pericallis can be short-lived perennials in suitable climates. Their compact size and profusion of flowers make them a popular choice for containers and garden beds, especially in early spring.
Understanding Pericallis Needs
Light
Pericallis plants flourish in bright, indirect light. Outdoors, partial shade is ideal to protect them from intense afternoon sun, which can cause wilting and stress. For indoor plants, position them near a north or east-facing window for sufficient light without harsh direct sunlight. Direct sun exposure can be detrimental, leading to leaf burn and decline.
Water
Consistent moisture is important for Pericallis plants, but they are sensitive to overwatering and waterlogging. The soil should remain evenly moist, like a well-wrung-out sponge, rather than saturated. Overwatering quickly leads to root rot. Water twice a week, ensuring the soil feels dry to the touch before rewatering.
Soil
Pericallis thrive in well-draining soil rich in organic matter. A slightly acidic soil pH, between 5.5 and 6.5, supports healthy growth. For container planting, a peat-based potting mix or a blend of peat, perlite, and coconut coir provides necessary drainage and organic content. Good soil drainage prevents problems from excess moisture.
Temperature and Humidity
Pericallis plants prefer cool temperatures, thriving in a range of 50 to 65 degrees Fahrenheit (10-18°C). They are heat-sensitive and struggle in temperatures above 85 degrees Fahrenheit (29°C), which halts flowering. While they tolerate light frost, temperatures below 35 degrees Fahrenheit (2°C) are not suitable. A humid environment is also beneficial, especially indoors, where humidity can be maintained by placing plants on a pebble tray with water.
Routine Care Practices
Fertilizing
Regular fertilization supports robust growth and prolific blooming. After initial transplant, apply a balanced, slow-release fertilizer. During the active growing season and flowering period, supplement with a water-soluble fertilizer every two to four weeks. Some varieties benefit from a fertilizer with higher phosphorus to encourage flower production. Adequate nutrient levels prevent yellowing leaves.
Pruning and Deadheading
Deadheading spent Pericallis blooms encourages more flowers and extends the blooming period. This involves removing faded flowers, preventing the plant from expending energy on seed production and directing it towards new blooms. For a fresh flush of flowers, plants can be cut back by one-third to half their size after the initial bloom cycle. This rejuvenation pruning stimulates new growth and a second wave of blooms within a few weeks.
Addressing Common Problems
Pests
Pericallis plants can encounter several common problems, including pest infestations. Aphids, whiteflies, thrips, and spider mites are frequent pests. Signs of infestation include honeydew (a sticky residue), distorted leaves, or fine webbing. Manage these pests using insecticidal soap, neem oil spray, or by introducing natural predators.
Diseases
Fungal issues like powdery mildew and root rot can arise, particularly in overly humid or wet conditions. Powdery mildew appears as a white, powdery coating on leaves. Root rot is indicated by wilting despite moist soil, or yellowing leaves. Good air circulation, avoiding overwatering, and ensuring proper soil drainage are preventative measures.
General Symptoms
Wilting, yellowing leaves, or a lack of blooms can indicate improper watering (either too much or too little), nutrient deficiencies, or unsuitable temperatures. Adjust watering practices, check soil pH, and ensure the plant is in its preferred cool environment to resolve these issues.