Both furrow and sprinkler irrigation increase weed populations within the alleys, in contrast to trickle irrigation. Although drip irrigation is somewhat expensive, it s the most efficient way of applying water in terms of water use. Because water is generally confined to the root area, weeds are not as prolific in the alleys. Drip irrigation systems apply water more uniformly and require less labor, but can be damaged by rodents and cultivation. Raspberries should never be severely stressed for moisture.
Irrigation is particularly critical during bloom and when the berries are sizing.
Training and Pest Control Unlike Latham and other standard raspberries, Heritage and other everbearing raspberries do not have to be trained to a trellis. The primocanes are erect, sturdy and rarely require support. Heritage suckers prolifically and will form a mature hedge in about 3 years. Hedges should be contained by cultivation, discing, or rototilling. Hedges are generally maintained at 2-3 feet wide.