By our calculations, you should look at sowing El grinta about 60 days before your last frost date.
Prepare ground for sowing by raking to produce an even surface. Sow thinly in pre-watered rows.
Ensure that temperatures are mild (minimum night temperatures should be around 0°C / 32°F) and all chance of frost has passed before planting out, as El grinta is a half hardy plant.