Okayama Salad is a popular variety of Butterhead lettuce, which belongs to the Lettuce genus (Lactuca sativa var. capitata 'Okayama Salad'). This variety is an Vegetable that typically grows as an Annual, which is defined as a plant that matures and completes its lifecycle over the course of a single year. Okayama Salad normally grows to a max height of 7.8 inches (20.0 cm metric).
This variety plant info is provided by the myfolia gardener's wiki. All details about Okayama Salad have been kindly provided by our members.
By our calculations, you should look at sowing Okayama Salad about 60 days before your last frost date.