Each year Stan's hand builds hundreds of live wreaths for use both inside and out. One of the most common questions is "how long does it last". That truly depends on many factors.
Let's start with what the wreath is made of. Over the years a revolution has taken place in the type of tree/green used for Christmas decoration. Not to say there isn't value in the previously popular varieties such as Spruce and Pine but the Fir has taken center stage for a host of reasons.
First I believe is longevity. It is not uncommon for a Fraser Fir wreath that has been kept cool to last until Easter (yes, Easter!) So, the first factor is indeed temperature. A cut green of any kind needs to minimize the loss of moisture and Fraser has unbelievable needle retention. Not to mention Stan's soaks every wreath we make in an all natural moisture retention solution to prolong life even more. This being said you can judge the life expectancy of your greens on the amount of heat it is exposed to. Indoors will obviously dry quicker than outside exposure such as the cemetery.
Second the soft texture of the Fir family is desirable for both your Christmas tree and Wreath handling. No more sharp stab of a spruce needle on your child's finger or feet by the tree. Although there are mixed opinions on the intensity of fragrance I describe most trees in the Fir family as a mild "citrus" odor. Agreeably not intense but very pleasant.
These days there are two primary Fir trees used for your holiday decorating. Either the Douglas Fir (longer, light green, pointier needles) or the Fraser Fir (shorter, two-toned, blunt tipped, needle) either of which is the trendy choice for all your decorating needs