Harman US
Grape variety

Mars Grape

Mars is a blue seedless grape with good disease resistance and strong garden reliability. It is often recommended for home growers in humid regions.

Grapes
Type
seedless, blue table
Best for
easy-care fresh eating

About Mars

Mars is a blue seedless grape with sweet, juicy slip-skin berries and flavor somewhat reminiscent of Concord. It is especially useful in humid climates because the vine has good resistance to common grape diseases, including powdery mildew and black rot.

Growing Mars Grape

Mars is a practical choice for Eastern gardens, but it still needs full sun, annual pruning, and a trellis to fruit well. Keep clusters exposed to light and airflow, and harvest when berries are fully blue and sweet, not just colored.

Full growing guide

For planting dates, care, and harvest that apply to all grapes, see the complete guide.

How to grow Grapes

Other grapes varieties

Variety characteristics are general guidance for US home gardens; performance varies by climate, soil, and season. Seed and plant availability differs by supplier. Page updated Aug 4, 2026.