Costata Romanesco is a prized Italian heirloom zucchini renowned among chefs and gardeners for its exceptional flavor and firm texture. The plants produce distinctly ribbed, pale-and-dark-green flecked fruits that show prominent ridges along their length. Harvested young, the flesh is dense, nutty, and richly flavored, considered by many the best-tasting summer squash, and it holds its texture well in cooking. The large male blossoms are also excellent for stuffing and frying. Costata Romanesco yields somewhat less than standard zucchinis but rewards with superior taste, and its ribbed slices are decoratively scalloped. Maturing in about 60 days, it is a strong garden performer. As an open-pollinated heirloom, its seed can be saved. It is a favorite of gardeners who prioritize flavor and quality over sheer volume.
Flavor Profile
Dense, nutty, and richly flavored, often called the best-tasting zucchini; holds texture well and slices show scalloped edges.
Visual Characteristics
Strongly ribbed fruits flecked in pale and dark green, with prominent lengthwise ridges.
Growing Tips
Harvest young for peak flavor; yields are lower than common zucchinis but the taste is superior, and the blossoms are excellent stuffed.
Where to Buy
Sourcing information coming soon. Check local nurseries and seed banks for availability.