How many annuals should you plant in a 16" pot? How many in a oak half barrel? I live in Lander, WY, zone 4
Hi, Well I can't answer this question because it truly depends on the variety of annual you are using. If, for example, you are planting large annuals such as geraniums, the amount needed will be a lot less than a smaller plant such as dwarf marigold. In general, I do recommend, planting close together so you can enjoy a good color show fairly quickly and because annuals won't last beyond frost anyway, so why not crowd them a bit. But, there is no magic number or formula I can give you because it also varies by the size of the plant you are starting with. For example, more mature plants will have larger root balls so you can't crowd them as close together as those that are younger with tiny root balls. As a very general rule, I'd leave a few inches between plants, but, in the end, it really comes down to what looks good to you and full.