What type of soil does Euphorbia milii require?
As a representative of tropical succulent plants, the choice of soil for Euphorbia milii directly affects its growth condition. Many plant enthusiasts often cause the plant to wither due to improper soil use during the maintenance process. This article will analyze Euphorbia milii's soil needs from the perspective of scientific soil mixing to help you create an ideal growing environment.
Three essential elements for selecting soil for Euphorbia milii
Adequate aeration ensures root vitality
Sandy soil is the ideal choice for Euphorbia milii, with a porosity as high as 40%-50%, which can effectively promote air circulation. It is recommended to add coarse sand with a particle size of 2-3mm to achieve a matrix porosity of over 35%, preventing root rot caused by oxygen deficiency.
A balanced nutrient matrix formula
Using a golden ratio of decomposed leaf soil: garden soil: vermiculite = 3:4:3, it not only ensures the content of organic matter (recommended >15%) but also maintains moderate fertilizer retention. Mix 200g of slow-release fertilizer per cubic meter of matrix to ensure a continuous supply of nutrients for 3-6 months.
Scientific construction of the drainage system
Mix 30% of perlite or volcanic rock particles into the matrix to form a three-dimensional drainage channel. Place a 3-5cm layer of ceramsite at the bottom of the pot to increase the drainage efficiency by 60%, effectively preventing root rot caused by waterlogging.
Advanced soil mixing techniques for Euphorbia milii
Seasonal soil adjustment plan
In spring and summer, increase 10% coconut fiber to improve water retention, and in autumn and winter, add 15% rice husk charcoal to enhance insulation. Adjust the nitrogen-phosphorus-potassium ratio at different growth stages, maintaining NPK at 2:1:3 during the growing season and adjusting to 1:2:2 during the flowering period.
Key points for matrix disinfection treatment
New soil needs to be sterilized with high-temperature steam (120℃ for 30 minutes) or soaked in a 0.2% potassium permanganate solution to effectively kill eggs and pathogens. It is recommended to replace the matrix every 12-18 months to maintain an ideal EC value of 1.2-1.8 mS/cm.
By scientifically mixing soil, the survival rate of Euphorbia milii can be increased to over 95%. Mastering the core logic of matrix proportioning, dynamically adjusting according to the plant's condition, and combining regular potting maintenance can keep Euphorbia milii vigorous, with a magnificent flowering period of up to 200 days.