How to Graft Cereus Spp. onto Cacti
Grafting is an important technique to enhance the ornamental value of cacti, and the combination of grafting Cereus spp. onto cacti is favored for its high survival rate and unique shapes. Mastering the correct grafting techniques and stock selection skills can make your succulents present a stunning layered growth effect.
Detailed Explanation of Three Steps for Grafting Cereus Spp. onto Cacti
Scion Treatment and Knife Preparation
Select semi-woody branches of Cereus spp., retain a length of 8-10 cm and remove the tender leaves. Use a sharp knife sanitized with 75% alcohol to cut a 30°斜面 on both sides of the base of the scion, ensuring the cambium layer is fully exposed. It is recommended to collect materials in the early morning when plant cell activity is optimal.
Key Points for Precise Grafting Operation
Make a 2 cm diagonal cut upwards from the cactus刺座 and quickly insert the scion to align with the cambium layer. Use elastic bands to secure with moderate pressure; too tight will hinder nutrient transport, and too loose will affect wound healing. It is recommended to use a composite fixation method with medical tape and toothpicks to ensure the scion is stable.
Scientific Care to Promote Survival
After grafting, place in a scattered light environment with a temperature of 25-28°C and maintain 50%-60% air humidity. Avoid watering for the first 3 days, start using a small amount of water along the pot edge from the 4th day, keeping the substrate slightly moist. On the 15th day, spray diluted brassinolactone (concentration 0.01ppm) to promote the formation of callus tissue.
Guide to Selecting Quality Stock Varieties
Comparison and Analysis of Stock Characteristics
Experimental data shows that the survival rate of grafting on Opuntia cochenillifera reaches 92%, with its thick flesh stems storing ample nutrients; Opuntia ficus-indica has strong resistance and is suitable for dry environments in the north; while Opuntia microdasys, with dense vascular bundles, is more suitable for shaping grafting.
Key Indicators for Stock Cultivation
Select healthy plants that are 2-3 years old, with stem thickness >1.5 cm and well-developed roots free of diseases and pests. Apply high-potassium fertilizer 3 months in advance to enhance resistance, and control water 15 days before grafting to increase cell sap concentration, which can significantly improve the fusion speed of the scion.
Through scientific grafting methods and precise stock selection, the perfect combination of Cereus spp. and cacti can be achieved. It is recommended to apply calcium-magnesium fertilizer once every quarter after grafting to enhance the strength of the joint, regularly check the tightness of the bandage, and the appearance of new spines indicates successful grafting. Mastering these core technologies, you can also create stunning layered succulent landscapes.