A garden is "un jardin" (masc.) in French.
"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".
Gardens
The plural of "agréable" in French is "agréables."
The plural of "bonjour" in French is "bonjours."
A sister is "une soeur" in French. The plural is "des soeurs".
No - garden is singular, gardens is plural.
The plural of "objet" in French is "objets."
The plural of "woman" in French is "femmes."
If you mean "miss" as in "madame", the plural is "mesdames".
The plural of "princess" in French is "princesses."
les is the plural for both articles 'la' and 'le' in French
The plural of egg in French is "œufs."