PENTSTEMON
x PENSTEMON
xx FLOWER
Penstemons for the garden. A guide to species or cultivars that are for dry land, a rock garden, a prairie or meadow garden, or that are widely adaptable. Advice on propagation and culture. FINE GARDENING #20 Jul-Aug 1991 pg. 44
Attributes of Penstemon strictus 'Bandera' noted. FINE GARDENING #55 May-Jun 1997 pg. 22
Penstemons, easy-care perennials to grow anywhere in North America. Includes a chart of some of the most versatile and popular penstemons. FINE GARDENING #61 May-Jun 1998 pg. 28
How to grow pine-leaf penstemon (Penstemon pinifolius). FLOWER & GARDEN Apr-May 1987 (v.31#3) pg. 36
Penstemons, a guide to desirable hybrids. GARDEN GATE #30 Dec 1999 pg. 22
Penstemons, the all-American perennial. A description of the genus and some desirable species. Includes advice on growing them from seed. HORTICULTURE Jun 1999 (v.96#5) pg. 42
A look at the varieties of penstemons and which ones adapt best to various climates. SUNSET Sep 1986 (v.177#3) pg. 90
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