Where to dig the soil for planting flowers in the city
In the jungle of steel and concrete, creating a green space requires high-quality soil, which is the foundation for the healthy growth of flowers. Urban gardeners often face the challenge of obtaining soil, considering both the legality of resources and the quality of the soil. This article shares practical methods to help urban gardeners solve the problem of acquiring planting substrates.
Urban green belt soil collection plan
Specifications for collecting soil from park green spaces
Soil in the tree area is rich in humus, especially the pine needle soil under pine and cypress trees, which has a suitable pH for acid-loving plants. Before collecting soil, confirm whether the area allows collection and use a small铲具 to collect the surface layer, preserving a protective layer of more than 10cm.
Soil screening in riverbank areas
Riverbank soil is rich in minerals; when collecting, avoid industrial pollution sections. Choose the middle layer soil exposed during the low water period and mix it with 30% perlite to improve drainage.
Processing forest humus soil
Suburban forest humus soil needs to be treated at high temperatures, turned over every 2 hours during sun-drying for 3 consecutive sunny days. In case of urgent need, steam at 100℃ for 20 minutes to completely kill eggs.
Key technologies for substrate improvement
Disinfection and sterilization process
Sun-drying method requires the use of black plastic film for enhanced effect, and hot water irrigation needs to reach above 80℃. Professional growers recommend microwave batch processing, heating each kilogram of soil at high power for 3 minutes.
Nutrient mixing ratio
Basic soil should be mixed with decomposed sheep manure, vermiculite, and rice husk charcoal in a ratio of 3:1:1. For foliage plants, additional nitrogen and phosphorus fertilizers can be added, while flowering plants require the addition of bone meal and other calcium elements.
Analysis of urban gardening substrate types
Characteristics of decomposed leaf soil
Decomposed leaf soil has excellent water retention and breathability, suitable for fleshy-rooted plants such as azaleas and camellias. When purchasing, distinguish between genuine and fake products, with genuine products containing partially decomposed leaf veins.
Application of peat soil
Imported peat soil has a fibrous structure, suitable for cutting propagation of succulents. Domestic grass peat soil has a strong fertilizer retention ability and is recommended to be mixed with river sand at a ratio of 1:1.
Production of humus soil
Household kitchen waste compost needs to be added with EM bacteria agents to accelerate decomposition, coffee grounds, and eggshell powder can adjust the pH. The fermented humus soil should have a dark brown granular structure.
Urban flower planting should not only make good use of natural resources but also pay attention to ecological protection. Establishing a community soil exchange station and participating in green waste recycling can not only obtain high-quality planting substrates but also promote the recycling of resources. Mastering scientific treatment methods can turn ordinary garden soil into an ideal cultivation medium.