2009 journal article

Crossability, cytogenetics, and reproductive pathways in Rudbeckia subgenus Rudbeckia

HortScience, 44(1), 44–48.

By: I. Palmer, T. Ranney, N. Lynch & R. Bir

Source: NC State University Libraries
Added: August 6, 2018

1999 journal article

Increasing rhododendron flowering

Nursery Management & Production, 15(11), 31.

By: R. Bir

Source: NC State University Libraries
Added: August 6, 2018

1997 journal article

Carryover affects of sumagic treatments on Kalmia latifolia cultivars

Proceedings of Southern Nurserymen's Association Research Conference Annual Report, 42(1997), 330–331.

By: R. Bir, T. Ranney & J. Conner

Source: NC State University Libraries
Added: August 6, 2018

1996 journal article

Rooting stem cuttings of some eastern native rhododendrons

American Rhododendron Society Journal, 50(2), 65.

By: R. Bir

Source: NC State University Libraries
Added: August 6, 2018

1989 journal article

Spray water or let it drip?

American Nurseryman, 169(3), 80.

By: R. Bir

Source: NC State University Libraries
Added: August 6, 2018