Propagation Method of Euphorbia milii
As a star ornamental plant in the Euphorbiaceae family, Euphorbia milii is deeply loved by horticulture enthusiasts for its unique spiky stems and bright flowers. Mastering the correct cutting propagation technique can not only reduce maintenance costs but also experience the wonderful process of plant regeneration. This article will systematically analyze the key points of the entire cutting process of Euphorbia milii from time selection to post-cut care.
I. Best Cutting Time Selection
1.1 Seasonal Temperature Control
Spring to early summer (May-June) is the golden cutting period when the daytime temperature stabilizes at 20-25°C and does not drop below 15°C at night, which meets the ideal temperature range for the root germination of Euphorbia milii. Experimental data show that the survival rate of cuttings during this period can reach over 85%, three times higher than in winter.
1.2 Response to Special Weather
During the plum rain season, it is necessary to enhance ventilation to prevent mold, and in dry northern regions, it is recommended to cover with transparent plastic bags to maintain humidity. When the temperature exceeds 30°C, cutting should be postponed until the cooler autumn to avoid high temperatures causing cut surface rot.
II. Key Techniques for Cutting Treatment
2.1 Selection Criteria for Branches
Select semi-woody branches that are 1-2 years old, with a diameter of about 0.5 cm. Pay attention to the internode spacing of leaves, retaining 3-4 complete internodes to ensure sufficient nutrient reserves. The cut should be made 0.5 cm斜切 from the base internode, increasing the water absorption area.
2.2 White Slime Treatment Solution
The milky white juice contains alkaloids such as euphorbin, which needs to be thoroughly cleaned with a sterile cotton swab dipped in hydrogen peroxide. Latest research shows that applying a 0.1% potassium permanganate solution instead of wood ash can increase the formation speed of callus tissue by 30%.
III. Scientific Substrate Proportioning Scheme
3.1 Basic Formula Recommendation
Use a ternary matrix of perlite: vermiculite: decomposed leaf soil = 2:1:1, which not only ensures breathability but also contains an appropriate amount of nutrients. The pH value needs to be controlled between 6.0-6.5, and sulfur powder can be added to adjust the acidic environment.
3.2 Special Improvement Techniques
In coastal areas, coconut bran can be used to replace river sand to effectively avoid salt accumulation. Adding 50g of slow-release fertilizer granules per cubic meter of matrix can continuously provide the necessary nitrogen, phosphorus, and potassium elements for root growth.
IV. Intelligent Maintenance Management Strategy
Use the 'dry-wet' watering method, watering thoroughly when the surface of the matrix turns white. It is recommended to use an intelligent temperature and humidity meter to monitor and maintain the air humidity at around 70%. During the rooting period, spray the seaweed solution once every 10 days to promote the development of fine roots.
Through 60 days of systematic care, when the new buds have 3-4 true leaves, they can be transplanted into formal flower pots. Mastering these core techniques, you can also easily achieve the large-scale propagation of Euphorbia milii and create your own thorny garden.