[tag=NN] | [tag=VB] | [lemma=jone] | [□] □
[tag=NN] | [tag=VB] | [lemma=jone] | [□=□] □
[tag=NN] | [tag=VB] | [lemma=jone] | [□ & □] □
Let the stem die down naturally . Because named cultivars have root systems that are fibrous and shallow , they do not tolerate dry sites without supplemental water . Learning the proper care of roses and management of pest problems increases your success in growing a beautiful rose bush . Pruning and Training Pruning for Fruit Production Pruning a tree grown for fruit is somewhat different than it is for a landscape tree such as a birch . Most root rots are caused by various species of soil-inhabiting fungi , which require cool , moist soils in order to grow and multiply . This removes and kills overwintering eggs , minimizing the risk of iris borers next year . It is important to distinguish between the two insects because the Japanese beetle is a serious landscape pest . Root rot also causes the lower leaves to yellow or drop . Throughout the life of the tree , you should water its root zone thoroughly during the growing season whenever there is a dry spell . If lower canes are covered with soil to a depth of two to three buds , this will encourage a larger root system and the development of numerous renewal canes , a strategy that will maximize the useful lifespan of the plant . Powdery mildew generally does not warrant chemical control in the home landscape . They are potentially serious landscape pests . Let the cut surfaces dry in a shaded location before planting to prevent bacteria from infecting the fresh wounds . Foliar nematodes are an emerging problem on a host of landscape plants in Minnesota .