How do you determine how many flats of annuals you will need per square yard of garden space?

I want to put annuals in my flower beds that are planted with perennials.
Is there a rule of thumb to determine how many flats of 24 per sq yard?

2009-04-28T18:02:23Z

Thanks for your help.
I am considering:
Dahlias
Marigolds (dwarf)
Portulaca
Geraniums
Scaevola

T L2009-04-28T17:39:51Z

Favorite Answer

Most good Garden Centers will have a chart to tell you how many plants are needed to fill a given area. It will depend upon the recommended spacing for the given plant(s), that is different plants will require different spacing. Once you know that, just divide that number by the number of plants in the flat. A quick rule of thumb for spacing is to add the expected spread of two plants together and divide by two. Good Luck.

m & m2009-04-28T17:33:25Z

It depends on what kind of annuals you are planting since they vary in growth pattern and size- for instance, snap dragons are tall and narrow, one per 8 inches to a foot, but wave petunias can cover 3 feet or more. Can you specify what annuals you are considering?