What to Do When a Cactus Doesn't Root
As a drought-resistant succulent, cacti often have difficulty rooting, which can困扰 new gardeners. This article systematically analyzes three scientific root promotion methods to address poor root development, accompanied by real photo illustrations to help gardeners quickly master the key operations.
Core Techniques for Cactus Rooting
1. Paper Towel Wrap Rooting Method
Choose sterile gauze/kitchen paper towels, moisten with cool boiled water, and wrap around the base of the cactus. Place it in a 25°C environment with scattered light, and check the moisture and rooting progress daily. When new roots exceed 2cm, plant in moist soil with 70% particle content, and avoid watering for the first three days to prevent root rot.
2. Key Points for Vapor Root Promotion
Suspend the cactus with a dried wound 0.5cm above the water surface in a transparent container for easy observation. It is recommended to change the water weekly and add 1/4 concentration of hydroponic nutrient solution, maintaining the water temperature consistent with room temperature. When the roots develop to 3cm, continue with hydroponics or transfer to particle soil cultivation, maintaining 80% air humidity during the transition period.
3. Biohormone Assistance Plan
Choose rooting powder containing indoleacetic acid and prepare the solution at a ratio of 1:800. Soak, then place in a shaded area to air-dry for 12 hours until the cut completely heals before potting. Using a breathable substrate of珍珠岩 (perlite) and 蛭石 (vermiculite) can increase the success rate of rooting by 40%.
By controlling humidity, adjusting temperature, and synergizing hormones, these three methods can effectively solve the problem of cactus rooting. It is recommended to choose an appropriate method based on the planting environment, regularly observe the root status, and combine with gradual exposure to light care. In 2-3 weeks, a healthy root system can be obtained.