Well-developed crowns, roots and rhizomes filling soil profile in container.
This plant benefits from 60 days cool(38F)/moist stratification to break dormancy prior to germination.
2015. Propagation protocol for production of Container (plug) Pinus jeffreyi plants USDA NRCS - Corvallis Plant Materials Center Corvallis, Oregon. In: Native Plant Network. URL: https://NativePlantNetwork.org (accessed 2024/12/22). US Department of Agriculture, Forest Service, National Center for Reforestation, Nurseries, and Genetic Resources.