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.
Once they are planted, raspberries are low maintenance fruits but they do require attention a few times during each season. Pruning is required once a year at different times for autumn and summer fruiting raspberries. Raspberries are water hungry plants so mulching at the beginning of each season is advised. In dry weather they will require watering especially when the fruits are forming. Feeding is also needed. Summer fruiting raspberries will need to be tied into supports during the year.