Keep in mind when planting that Crown Jewels is thought of as hardy, so this plant will grow or become dormant during the winter. A soil ph of between 5.1 and 6.0 is ideal for Crown Jewels as it does best in weakly acidic soil.
By our calculations, you should look at sowing Crown Jewels about 56 days before your last frost date.
As Crown Jewels is hardy, ensure temperatures are mild enough to plant out - wait until after your last frost date to be on the safe side.