Hortus is garden; horti is gardens.
"Garden" in not gender specific in Englisg; it does not have a masculine or feminine form. While romance languages such as Spanish, French and Latin have a great number of gender specific terms, English has very few, and even these are going by the wayside from disuse, such as "actor" and "actress".
The possessive form of the plural noun pollinators is pollinators'.The plural possessive name for the garden of pollinators is: Pollinators' Garden
Cubicula.
Linguae.
Forum---Plural Form Forums,Foreign Plural Form Forumina
The noun Betty Garden is singular, not plural or possessive. The plural form is Betty Gardens; the possessive form is Betty Garden's. Betty Garden is a proper noun because it is the name of a person or a place; proper nouns are always capitalized.
The Latin masculine noun draco (a snake) has the nominative plural form dracones
Gladioli (actual Latin plural) or gladioluses (Anglicized).
The plural of vertebra is vertebrae.
The possessive form of gardeners is gardeners'.
culinae
Facimus.