8 Colo. Code Regs. § 1203-5, pt. 2.0

Current through Register Vol. 48, No. 1, January 10, 2025

Part 2.0 - NURSERY STOCK SPECIFICATIONS

2.1DECIDUOUS TREES

ROOT SPREAD - BARE ROOT TREES

Bare root trees shall have a minimum root spread as follows:

Caliper	Min. Root spread
Greater than 1/2 in. up to 3/4 in.	12 in.
Greater than 3/4 in. up to 1in.	16 in.
Greater than 1 in. up to 1 1/4 in.	18 in.
Greater than 1 in. up 1/4 to 1 1/2 in.	20 in.
Greater than 1 in. up 1/2 to 1 3/4 in.	22 in.
Greater than 1 in. up 3/4 to 2 in.	24 in.
Greater than 2 in. up to 2 1/2 in.	28 in.
Greater than 2 1/2 in. up to 3 in.	32 in.
Greater than 3 in. up to 3 1/2 in.	38 in.

2.2DECIDUOUS SHRUBS

ROOT SPREAD - BARE ROOT SHRUBS

Bare root shrubs shall have a minimum root spread as follows:

Height of Plant	Min Root Spread
Greater than 18 in. up to 24 in.	10 in.
Greater than 2 ft. up to 3 ft.	11 in.
Greater than 3 ft. up to 4 ft.	14 in.
Greater than 4 ft. up to 5 ft.	16 in.
Greater than 5 ft. up to 6 ft.	18 in.

2.3ROSE GRADES

GENERAL

The standards specified apply only to field-grown roses when sold bare root, or individually wrapped and packaged, or in cartons.

Roses shall be graded by number and caliper of canes.

As used in the grading specifications below, "strong cane" means a cane that is healthy, vigorous, and fully developed so that it is hardened-off throughout. The caliper of the cane shall be measured not higher than 4 inches from the bud union.

A. Hybrid Tea, Tea, Grandiflora, Floribunda Rugosa Hybrids, Hybrid Perpetuals, Moss, and climbing roses

Grade No. 1- At least three strong canes measuring at least 5/16 inch in caliper, branched not higher than 3 inches from the bud union.

Grade No. 1 1/2- At least two strong canes measuring at least 5/16 inch in caliper, branched not higher than 3 inches from the bud union.

Grade No. 2- At least two canes, one of which shall be a strong cane measuring at least 5/16 inch in caliper. The second shall be at least 1/4 inch in caliper, branched not higher than 3 inches from the bud union.

B. Polyantha, shrub, landscape and low growing Floribunda Roses

Grade No. 1- At least three strong canes measuring at least 1/4 inch in caliper, branched not higher than 3 inches from the bud union.

Grade No. 1 1/2- At least two strong canes measuring at least 1/4 inch in caliper, branched not higher than 3 inches from the bud union.

Grade No. 2- At least two canes, one of which shall be a strong cane measuring at least 1/4 inch in caliper.

8 CCR 1203-5, pt. 2.0

41 CR 06, March 25, 2018, effective 4/15/2018

42 CR 13, July 10, 2019, effective 7/31/2019

41 CR 06, March 25, 2018, effective 10/30/2019

42 CR 18, September 25, 2019, effective 10/30/2019