Growing Conditions for Flower Bed Plants and the Effect of Soil pH
The key to successful and trouble-free gardening is choosing plants that best suit your garden's conditions. Plan your home garden to match the most important features of your property - sunlight and soil. Plants rely on light as an energy source for growth, flowers and fruit.
The amount of sunlight a garden bed receives determines what we can grow. Managing soil is crucial for successful gardening. Checking soil fertility, pH and moisture content guides how you prepare and maintain a flower bed.
Sun requirements: Plants adapt to different sunlight exposure to achieve optimal growth, flowering and fruiting. Choosing vegetables, flowers, perennials and herbs in your home garden requires careful observation of sunlight throughout the day and across the seasons. Soil, water, temperature and light interact to give your garden different microclimates. Plants are labeled in three groups according to their light requirements.
Soil testing: Know your soil before deciding where and what to plant. Explore around your yard and choose the spot whose soil texture and drainage are best suited to gardening. Dig up soil samples for testing, testing at the depth of the plants. The most critical indicators to check are pH and fertility.
pH is a measure of acidity or alkalinity, and it determines which nutrients in the soil are available to plants. Depending on soil pH, nutrients may be available, unavailable, or present in nearly toxic excess. The pH scale ranges from 0 to 14, with 7 being neutral. A pH below 7 means the soil is acidic, while 7 means alkaline. Each one-unit change in pH is a 10-fold difference in acidity or alkalinity. For example, soil with a pH of 6 is 10 times more alkaline than soil with a pH of 5. Nutrient availability is reduced in alkaline soil. Most plants grow well in slightly acidic to nearly neutral soil, with a pH between 6 and 7.5. Some plants, such as blueberries, are adapted to acidic soil. Changing soil pH takes time, and maintaining a garden's preferred pH means monitoring soil pH whenever a new garden bed is prepared. You can adjust the pH, or choose plants that thrive at the natural pH of your garden soil. When making amendments, consider your garden soil type (sandy, loamy or clay).
Fertility refers to the soil's ability to provide plants with the essential nutrients that let them grow, flower, develop and stay healthy. Carbon, oxygen and hydrogen come from water and carbon dioxide in the air. The three main elements found in commercial fertilizers that are used to amend soil are nitrogen (N), phosphorus (P) and potassium (K). Calcium (Ca), magnesium (Mg), sulfur (S), iron (Fe), manganese (Mn), zinc (Zn), copper (Cu), boron (Bo) and molybdenum (Mo) are the trace elements needed. Soil pH affects the balance and availability of nutrients and beneficial organisms. Plants adapt to different levels of soil fertility and show healthy to abnormal growth depending on their growing conditions.
