When choosing a specific type of raspberry plant, you must also consider the type of soil you will be growing the plants in. For example, if your soil is heavy, and does not drain well, then you should not grow a raspberry plant variety that is susceptible to root diseases. Raspberry. The planting site needs rich and well-drained soil, great air circulation, and shelter from wind. The more sun, the more fruit. They like an acid soil, ranging from 4.5 to 5.5 pH," said Pandian, a horticulture educator. Raspberries benefit from having a thick layer of mulch. Berries take lots of water to become sweet and juicy. "Most soil in Wisconsin is 7, slightly alkaline, that makes it very challenging to grow blueberries." Your plants need one inch of water per week during the growing season. The raspberry fruit comes from the Rubus plant and has several varieties and hybrids. Healthy soil is especially important for growing bramble berries since half of each plant resides in the soil. . The bramble fruits, including raspberries and blackberries, are a favorite of many gardeners and are easy to grow. Here are the top five berries for Wisconsin gardens. Companions for Growing Raspberries. Water. Here are 10 ways to savor super-nutritious black raspberries this summer from blackcap lovers in a group called Wild Food Wisconsin on Facebook, and from well-known Wisconsin … He suggests having your soil's pH tested to find out if it can grow … Like snow, the red raspberries discovered in my aunt's yard in Iowa during a summer visit seemed like a miracle – mild, sweet and pleasingly seedy, nothing like the crazy-tart blackberries that grew back home. Straw and wood chips both work well to help keep in water and stop weed growth. Growing up in a semi-tropical climate, I was ten years old before I experienced two natural wonders – snow and summer-ripe red raspberries. Raspberry Varieties. Raspberries grow best in a sunny position but also, unlike many fruits, they will also grow successfully in a partially-shaded spot. "Blueberries are very picky about their soil pH. The major varieties of raspberries include red, black, golden and purple.