Green and Gold Altar Flowers

When green vestments are used, bright yellow flowers like these poms are a good compliment. 

Regarding color,  Fleurs de Marie-Jacqueline writes in her excellent blog post Altar Flowers:
"Perhaps the most important consideration is that the altar flowers should be harmonious with the color of the vestments and altar frontals for the day according to the liturgical norms."

White alstroemeria, Queen Anne's lace, eucalyptus and grey-green pittosporum fill out the arrangement.  

Ginger plant, peeking out from behind, adds form and variety and is very hardy. 

This work-in-progress picture illustrates how I positioned the ginger in the center back of a block of wet oasis (vase in the back left) to determine the height of the arrangement.  

Another excellent article that outlines important considerations when designing for the traditional altar is found here on New Liturgical Movement's website.  In this article, author Shawn Tribe discusses elements such as proportion, height, symmetry and color when designing flowers for the traditional altar.  

Here is a glimpse of the final effect...