In their native environment, Cypress trees can grow up to 40 feet tall, with some varieties even taller. Potted, these plants maintain a minimal size compared to their outdoor counterparts. They enjoy bathing in the full sun and thrive in various well-drained soils. Cypress is susceptible to root rot, brought on by an inadequate amount of water too frequently or poorly draining soil. Potted Cypress trees add beauty and charm to a home as well as improve the air quality. Bagworms and spider mites are common pests among Cypress trees.
Choose a large planter. Place a sponge in the bottom of the planter over the drainage holes. Fill the container with a soil mixture consisting of 50 percent peat moss, 25 percent loamy soil and 25 percent loose soil or sand. Combine these ingredients in the planter and mix well. Place the tree in the center, only as deep as it was in its original container. Planting deeper can cause decay and damage to the root system.
Water generously. Apply water when the top 1 inch of soil in the planter is dry. Allow water to drain freely from the bottom of the planter when watering to provide an adequate amount. Place a layer of mulch around the base of the tree in the planter.
Fertilize the tree in early spring. Apply a slow-release fertilizer according to the package directions. If a water-soluble fertilizer is used, apply it monthly following the label instructions.
Inspect the tree for insects. Remove bagworms by hand from the tree. Spray with an insecticide containing Dimethoate to prevent these pests in the future. Spider mites can be removed with a forceful spray from a hose and the application of a miticide product available at a local garden center.