Titanium and aluminum are often used as colorants in tattoos; more worrisome, inks using nonmetal colorants may include traces of antimony, arsenic, beryllium, chromium, cobalt, lead, nickel, and selenium (AESI filed over the latter eight metals).
Apply about two ounces of a 5-10-5 fertilizer around each plant. Starting the second season and annually thereafter, fertilize raspberries in early spring before growth begins. Apply a balanced fertilizer, such as a 10-10-10, at a rate of 15 to 20 pounds of fertilizer per 1,000 square feet of planting. If using the hill system, apply about one-half cup per plant. Don't fertilize raspberries in late summer or early fall as it may force new growth that does not harden off properly for winter.
The plants will grow in part shade, but will not produce as much fruit. Raspberries prefer rich, well-drained soil. A couple inches of compost mixed into the soil prior to planting will create a high quality planting site. A good rate is about 3 1/2 cubic feet of compost per 100 square feet. Raspberry plants need full sun to produce the most fruit. 2  The plant will grow in part shade, but harvests will be meager. 3  Space red and yellow types 2 to 3 feet apart; space black and purple types 4 feet apart. 4  Raspberries are self-fertile.