Table 1.

Plant Species Diversity Score and its relationship to characteristics of the nursery where the survey respondents worked, considerations in deciding to add plant species, cultivars, or varieties to inventories, and source of knowledge on species diversity issues or educational level for Washington, U.S., wholesale nursery industry respondent.

Survey subject	Percent^{^z}	Diversity^{^y}	Δ^{^x}	p^{^w}
Nursery characteristic
Area for single most produced species is <1 acre	42	26.3	+3.4	0.07
Total area for wholesale production is <2 acres	28	26.0	+2.4	0.24
Inventory of different plant species is >50	44	25.5	+2.1	0.27
Inventory of cultivars or varieties is >100	54	25.5	+2.0	0.30
Plants shipped out of state is <20% of production	75	24.6	+1.2	0.61
Plant inventory decision considerations^{^v}
Environmental concern	22	25.6	+1.7	0.47
Last year’s sales and profitability	36	24.7	+0.6	0.76
Customer requests	67	24.1	−0.6	0.75
Ease of growth and maintenance	50	23.6	−1.5	0.44
Overall plant preferences	64	23.5	−2.3	0.25
Sales and marketing info	42	22.3	−3.4	0.08
Production costs	33	22.1	−3.3	0.10
Species diversity knowledge source^{^v}
School or college class	30	27.4	+4.4	0.03
University outreach (researchers, field days, extension)	28	26.8	+3.5	0.10
Professional organizations	42	25.6	+2.2	0.26
Trade journals and articles	69	24.8	+1.7	0.40
Government programs (USDA, WSDA)	36	22.5	−2.8	0.17
Education beyond high school^{^u}	61	25.7	+3.7	0.05

↵^zPercent of respondents who selected the characteristic, consideration, or source.
↵^yScale from 7 to 42, with higher values indicating a greater awareness of diversity.
↵^xChange = Diversity for respondents who selected the characteristic – Diversity for those who selected a different characteristic.
↵^wSignificance of change in diversity, based on ANOVA.
↵^vRespondent could check more than one.
↵^uResponse based on overall level of schooling not on learning about plant diversity.