Site Selection and soil preparation for perennials
Consider the site before selecting your plants. Although many perennials, such as ferns, tolerate heavy shade, most perennial plants require abundant sunshine. Air circulation is important for avoiding diseases; stagnant, warm, and humid air creates ideal conditions for diseases. Perennial plants also require properly prepared soil, and a few have specific drainage and fertility requirements.
Soil preparation for perennials is similar to soil preparation for annuals. However, you should devote some special attention to perennial bed preparation, because plants may occupy the site for several years with little opportunity to correct any problems. When possible, add sand and organic matter such as bark, peat, or compost to soils well ahead of planting time.
A layer of organic matter 3 or 4 inches deep, worked into the soil a shovel's depth, is usually adequate. Since different types of organic matter work and decompose at different rates in the soil, it is best to use a little of two or three kinds of organic matter than a lot of just one.
Soil testing provides specific recommendations for fertilizer and lime needs. Since lime lasts for several years depending on the type used, never add lime without a soil test. Many fertilizers, such as phosphorus, are best applied and mixed into soils before planting. Perennials need a balance of several nutrients, including nitrogen, phosphorous, and potash; most garden supply stores carry a wide variety of fertilizer mixes. Keep in mind that phosphorus, including that found in bone meal, lasts for several years and need not be applied regularly.
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I am always looking for unique plants that brighten the landscape. Scaevola , commonly known as fan flower, is one of those plants. Native to Australia and the Pacific Islands, these plants are popular for their distinctive, fan-shaped flowers, versatile growth habit and robust nature.
I have enjoyed Echinacea coneflowers in my landscape for many years, and I find that these striking perennials bring a burst of vivid color to gardens. While recently visiting the home of Dave Overturf and Ginger Wentz in Long Beach, I couldn't help but notice the beautiful Echinacea coneflowers they have in their landscape.
Hydrangeas are one of my favorite plants to use in areas of my landscape that get part shade and full shade. This year, my hydrangeas have really put on a show with their colorful blooms.
One of the most popular and widely grown species, the bigleaf hydrangea, has always fascinated me with its ability to change color based on the soil pH and aluminum availability.