Willits & Newcomb, Inc. - The Citrus Nursery california, citrus, orange, navel, valencia, lemons, lime, mandarins, rootstocks, grapefruits, seedlings, budwood, nursery, landscaping, pummelos, tangelo, calamondin, pummelos, contract growing Willits & Newcomb, Inc. grows a full range of citrus products – from ball-and-burlap trees to headed retail nursery trees, as well as citrus propagation materials including seed, budwood and seedlings.