Methods for Caring for a Cactus as a Potted Plant
Cacti have become popular indoor potted plants due to their unique shapes and tenacious vitality. As representatives of desert plants, their care methods need to follow natural laws while also mastering special cultivation techniques. This article systematically analyzes the key points of the entire process from pot selection and soil preparation to daily care.
Essential Elements of Cactus Cultivation
Scientific Soil Mixing Ratio
The substrate should use a golden ratio of garden soil + wood ash + coarse sand (3:1:1), and it is recommended to change the soil every spring. Unglazed clay pots or red pottery pots are the preferred containers, with a diameter 3-5cm larger than the cactus, as larger pots can lead to waterlogging and root rot. Sterilize the pot with boiling water before potting and lay a 3cm layer of ceramic stones at the bottom to enhance drainage.
Intelligent Watering System
In the initial stage of transplantation, use the atomized spray watering method, twice a day for 15 days. After new roots sprout, adopt the "sandwich watering method": 2cm of dry topsoil + moist middle layer + slightly dry bottom layer. During the dormant period in winter, only 30ml of warm water needs to be poured along the pot wall once a month.
Light and Temperature Control
In spring and autumn, ensure 6 hours of direct sunlight daily, and use a shade net to filter strong light from 11-15pm in summer. Maintain an ambient temperature of 10-15°C in winter, and turn on the supplemental light for 4 hours a day when it drops below 5°C. For varieties with a concave top, prevent water drops from stagnating and use the bottom dipping method to water.
Advanced Care Strategies
Proper Potting Techniques
Perform root pruning and potting every spring for 2 years, keeping the main roots 8-10cm long and letting them dry for 48 hours after pruning. Sterilize the new pot with a fungicide solution and place it in a well-ventilated, shaded area to recover for 7 days after repotting.
Disease Prevention System
Apply bamboo vinegar solution once a month to enhance disease resistance, and immediately remove red spiders with a 75% alcohol cotton swab. Sprinkle diatomaceous earth before the rainy season to prevent mold, and turn on a circulation fan during consecutive rainy days to maintain air circulation.
Mastering these secrets of cactus cultivation will allow even gardening beginners to grow vibrant desert sprites. Through scientific soil mixing, precise water control, and environmental regulation, let cacti showcase their tenacious vitality in urban spaces and become unique green art pieces in your home.