Conifer seedlings are extremely poor competitors during the first 2 years in a seedbed. Consequently, it is imperative to select a site that contains few weeds, or weeds that can be controlled with current technologies. Complete elimination of all perennial weeds and proper seedbed preparation is essential. Constant surveillance coupled with regular and timely weed control practices is required to maintain weed-free seedbeds and nurseries. Consult labels for tolerant crops.