What is the minimum cold-resistant temperature for Catharanthus roseus 'Variegata'?
A brief knowledge sharing, introducing the minimum cold-resistant temperature of Catharanthus roseus 'Variegata' and the characteristics of this green plant, with detailed information as follows:
Catharanthus roseus 'Variegata', belonging to the Apocynaceae family, Catharanthus genus, and Catharanthus roseus variety, has violet flowers. It is distributed in regions such as Jiangsu in China. Evergreen throughout the year, the small violet flowers that bloom in March are spectacular against the new vines, making it an ideal ground cover for both flowers and leaves.
Catharanthus roseus 'Variegata'
I. Soil
Catharanthus roseus 'Variegata' has strong adaptability and does not have strict soil requirements. It prefers fertile, loose, moist, humus-rich sandy loam soil. For potted plants, it is recommended to use a mixture of leaf mold soil, garden soil, and river sand as the growing medium.
II. Light
It enjoys light and can tolerate shade. To prevent leaf burn during the hot summer, it needs to be shaded from direct sunlight. A semi-shaded environment is ideal. In darker places, the yellow spots on the leaves become lighter, and it is suitable for planting under sparse trees.
III. Temperature
It prefers warm temperatures but can also tolerate cold, enduring temperatures as low as 0℃ in winter.
IV. Watering
Water during dry spells and ensure drainage during rainy seasons. There should be no standing water at the bottom of the pot. As it grows quickly, the watering during the growing period should be sufficient, and the potting soil should be kept moist.
V. Propagation
1. Division
Division is best done in spring, cutting off the old branches from the previous year, digging up the plant, straightening the roots, and dividing them with a sharp knife, taking care to maintain the root system. The divided plants can be repotted and watered thoroughly.
2. Cutting
Cuttings can be taken throughout the year, using a mixture of珍珠岩 (perlite), 蛭石 (vermiculite), and sand with good water retention. For autumn and winter cuttings, a greenhouse or balcony is suitable; in winter, to ensure root growth, greenhouse cuttings are recommended.
Catharanthus roseus 'Variegata'
VI. Disease and Pest Control Methods
1. Diseases
Common diseases include: wilt, canker, and leaf spot, which can be prevented and treated with Bordeaux mixture spray.
2. Pests
Scale insects: Control with a 25% phosmet emulsion spray.
Root-knot nematodes: Control with 3% furadan granules.
This article shares comprehensive knowledge about the minimum cold-resistant temperature of Catharanthus roseus 'Variegata' and the characteristics of this plant, hoping it can be helpful to you.