Culture Notes
Japanese Yew should be grown in full sun on well-drained, moist soil, acid or alkaline. Do not allow water to stand around the root zone. Yew should be grown in full sun, only on well-drained, moist soil, but it can be either acid or alkaline. Do not allow water to stand around the root zone. Yew is used in the tree form primarily to create a screen, to develop into a topiary or to plant as a large clipped specimen on a large estate or other large landscape. They tolerate clipping very well. The dense crown makes it especially suited for a screen provided plants are located in full-day sun and they are given plenty of room to spread. All parts of the plant are poisonous except the red aril around the seed. The toxic chemical is referred to as taxine.
Planting and establishing shrubs
The most common cause of young plant failure is planting too deep. Plant the root ball no deeper than it was in the nursery. In most instances, the root flare zone (point where the top-most root in the root ball originates from the trunk) should be located just above the landscape soil surface. Sometimes plants come from the nursery with soil over the root flare. If there is soil over this area, scrape it off. The planting hole should be at least twice the width of the root ball, preferably wider. In all but exceptional circumstances where the soil is very poor, there is no need to incorporate anything into the backfill soil except the loosened soil that came out of the planting hole. Never place ANY soil over the root ball. If a row or grouping of plants is to be installed, excavating or loosening the soil in the entire bed and incorporating organic matter enhances root growth and establishment rate.
Weed suppression during establishment is essential. Apply a 3-inch thick layer of mulch around the plant to help control weed growth. Keep it at least 10 inches from the trunk. If you apply it over the root ball, apply only a one or two inch layer.  This allows rainwater and air to easily enter the root ball and keeps the trunk dry. Placing mulch against the trunk or applying too thick a layer above the root ball can kill the plant by oxygen starvation, death of bark, stem and root diseases, prevention of hardening off for winter, vole and other rodent damage to the trunk, keeping soil too wet, or repelling water. Regular irrigation through the first growing season after planting encourages rapid root growth, which is essential for quick plant establishment.
Pests, Diseases and Damaging Agents
Pests:Â Taxus mealybug, black vine weevil, Taxus scale, yew-gall midge. Deer enjoy browsing the plant and can cause significant damage or death of the plant in some instances.Â