Fertilize raspberry bushes in spring with compost or 10-10-10 fertilizer. Use a shovelful of compost or a handful of fertilizer for every foot of row.
Water raspberry bushes when rainfall is less than 1 inch per week. Water slowly so that the water soaks into the soil rather than running off; drip irrigation may be ideal. When the bush bears fruit, increase water to 1 1/2 inches per week.
Apply mulch to help the soil hold moisture and reduce competition from weeds.
Use loppers to remove second-year canes at soil level after they produce fruit. First year canes are green. These canes will produce fruit next year. Second-year canes are brown. Trim the first-year canes back to about chest height.