Gypsy broccoli seeds were bred for heat resistance, so it holds better in summer heatwaves and is extremely slow bolting. What that means for the gardener is less urgency when harvesting from mid-summer to the fall. The large Jumbo size dome-shaped heads of this outstanding variety are uniform, deep green, and very tasty. The large plants are tolerant of powdery mildew, and productive even in cool weather. After the main head is harvested, lots of small but delicious side shoots are produced, extending the harvest potential for the home gardener.