Fertilize as needed until late summer. Cabbage tastes best harvested when heads are wrapped tightly, in smaller sizes. 2
By our calculations, you should look at sowing Baby Gonzales about 45 days before your last frost date.
Best raised as transplants, sow 2 or 3 seed per pot in a sterilized seed starter mix (or 1-2 seeds per peat pot). Start indoors in pots 6 weeks before planning to set out, which can be up to 4 weeks before the last expected frost date. Provide strong sunlight, cool temperatures, good ventilation and even moisture. When plants have 3-4 true leaves, harden the plants off by gradually getting the plants used to cool outdoor temperatures and sunlight (…) Prepare a well-draining, sunny site by digging deeply and adding plenty of well-rotted manure and/or compost. Do not plant in same site as other Brassicas for 4 years. 2
By our calculations, you should look at planting out Baby Gonzales about 32 days before your last frost date.