hiya guys,
We feed kelp meal to our rose garden once a year in a self-mixed organic rose food we apply right after pruning each year. We've used MaxiCrop with wonderful results and also have used a fish-kelp fertilizer manufactured by the Grow-More company here in California. Another good product. More often the type of kelp that is used is Wrack Weed (Ascophyllum nodosum), a cold water marine macroalgae that is chock full of trace minerals. The revitalizing properties that kelp products exhibit are not the only benefits of the use. As the material itself is rich in Potassium (K), it helps to inhibit certain fungal enemies of roses including rust, powdery mildew, black spot, and downy mildew to just name a few. As a foliar feed, the activities are accelerated and can often be seen within a week of application. Care must be used as the provision of an abundance of elements that plants use in only small amounts can be a double-edged sword. This is a classic material where a little goes a long way.
best to all,
don
