Keep in mind when planting that Montego Yellow is thought of as very hardy, so this plant will tend to go dormant over the long winter months. Planting Montego Yellow in loamy soil with a ph of between 6.0 and 7.0 is ideal for as it does best in weakly acidic soil to neutral soil.
By our calculations, you should look at sowing Montego Yellow about 56 days before your last frost date.
As Montego Yellow is very hardy, ensure temperatures are mild enough to plant out - wait until after your last frost date to be on the safe side.