Provided is primers, where the primers specifically bind to a polynucleotide and are used to amplify the polynucleotide; and the polynucleotide comprises or consists of the following sequence: 1) the nucleotide sequence represented by SEQ ID NO: 5; or 2) the complete complementary sequence of the sequence represented by SEQ ID NO: 5; or 3) a nucleotide sequence being identical to 300 bp or more contiguous nucleotides in the sequence of the above 1) or 2), where the nucleotide sequence being identical to 300 bp or more contiguous nucleotides is unique to a male Ginkgo biloba plant; and the sequences of the primers are respectively represented by SEQ ID NO: 1 and SEQ ID NO: 2.

A new and distinct Chamaecyparis cultivar named SMNCLGTB is disclosed, characterized by colorful foliage, having green and gold coloration. Foliage is distinctively soft and not prickly. Plants are low maintenance with a narrow form. The new cultivar is a Chamaecyparis, suitable for ornamental garden purposes.

A new and distinct Chamaecyparis cultivar named FARROWCGMS is disclosed, characterized by yellow, yellow green and green foliage. Plants are full and have a compact, semi-dwarf pyramidal habit. Foliage is arranged in tightly held scales, forming an attractive texture. Plants exhibit rapid growth. Foliage color is maintained throughout Winter. The new cultivar is a Chamaecyparis, suitable for ornamental garden purposes.

A new and distinct Chamaecyparis cultivar named SMNCLBF is disclosed, characterized by soft foliage with a blue tint. Plants have low maintenance requirements and are upright with branches occurring at strongly acute angles. The new cultivar is a Chamaecyparis, suitable for ornamental garden purposes.

A new and distinct cultivar of Juniper plant named RLH-SS1PI, characterized by its relatively compact and upright narrowly pyramidal plant form; freely branching habit requiring minimal pruning; dense and bushy appearance; lateral branches that are flexible and resist breakage and splitting; leaves that maintain their bluish green color throughout the seasons; and good landscape performance.

A new and distinct cultivar of Juniper plant named RLH-SS1PI, characterized by its relatively compact and upright narrowly pyramidal plant form; freely branching habit requiring minimal pruning; dense and bushy appearance; lateral branches that are flexible and resist breakage and splitting; leaves that maintain their bluish green color throughout the seasons; and good landscape performance.

A new cultivar of white spruce tree named Westervelt characterized by its needle foliage that is blue in color and soft in texture, needles and foliage that is narrow in diameter and size and upright and narrow plant habit with a strong central leader.

A new cultivar of Thuja occidentalis named King of Brabant that is characterized by its very compact and tight plant habit, its straight upright, pyramidal plant shape and its vigorous growth habit for having a compact plant habit.

A new cultivar of Thuja occidentalis plant named, Hoogi023, that is characterized by its compact and columnar plant habit, and its new foliage that is golden yellow in summer turning more yellow-orange in fall and winter.

A new cultivar of Thuja occidentalis plant named, Hoogi023, that is characterized by its compact and columnar plant habit, and its new foliage that is golden yellow in summer turning more yellow-orange in fall and winter.