What type of soil does a rose need to grow
High-quality soil is the key foundation for roses to bloom, choosing the right matrix and proper disinfection can effectively prevent diseases and pests. This article will systematically analyze the soil formula requirements and disinfection plan for rose cultivation, helping flower friends create a microenvironment suitable for root development.
Rose planting soil formula
Requirements for slightly acidic matrix
Roses grow best in a slightly acidic environment with a pH value of 5.5-6.5, and can be tested regularly with pH test paper. When the soil becomes alkaline, it can be adjusted by watering a 1:1000 ferrous sulfate solution or adding pine needle soil once a month.
Standards for ventilation and drainage
It is recommended that the matrix porosity is greater than 25%, which is considered qualified if it completely penetrates within 3 seconds after watering. The proportion of perlite and coarse river sand should reach 30%, and it is recommended to lay a 3cm layer of ceramic particles at the bottom of the pot for drainage.
Matching of nutrient matrix
Classic formula: decomposed leaf soil: garden soil: river sand = 5:3:2 (10g bone meal per liter of soil). The upgraded version can use coconut bran instead of garden soil, and add 5% earthworm dung to increase fertility.
Techniques for disinfecting rose soil
Sunlight exposure method
In the high-temperature period of summer, spread the soil in a 5cm thick layer, cover it with transparent film, and expose it to the sun for 7 consecutive days, turning it twice a day. This method can kill more than 98% of pathogens and虫 eggs.
Chemical agent treatment
Prepare a solution of potassium permanganate at a ratio of 1:2000, and spray 5L of solution per cubic meter of soil. After treatment, cover with film and seal for 72 hours, then ventilate and dry for 5 days before use.
Key points of rose soil maintenance
Techniques for maintaining acidity
Water the roots with diluted rice vinegar (1:50) or ferrous sulfate solution once a month, and increase the application frequency during the rainy season. Fermented leaf solution (orange peel + rice washing water) is also a natural acidifier.
Soil turning and topdressing cycle
Change the top 5cm layer of soil in pots every half a year, and deep turn 30cm in the spring for ground planting. Combined with the application of decomposed sheep manure (500g/m²) can effectively maintain fertility.
Scientific soil mixing and disinfection are the cornerstone of healthy growth of roses, and it is recommended to improve the soil every early spring. By regularly testing pH, supplementing organic fertilizer, and reasonable crop rotation, a continuously fertile cultivation environment can be built, allowing rose plants to maintain strong blooming ability.