General information
Muscat Bleu (also known as Muskat bleu) is a table grape variety developed by winegrower Garnier on Lake Geneva in Switzerland. The cross between Garnier 15/6 × Seyve-Villard 20-347 resulted in a vigorous, mold-resistant grape with excellent flavor and attractive berries. Its robustness and yield make it widely planted both commercially and in allotments.

Grape
Muscat Bleu forms large, loosely filled bunches with a shouldered shape, filled with firm, crunchy blueberries averaging 3.6 grams each. The grapes are ripe for consumption from late August to early September. The flavor is aromatic with a spicy muscat note and a fine balance between acidity and sweetness. Also suitable for grape juice.

Resistance

• Peronospora (downy mildew): +++
• Oidium (powdery mildew): +++

Thanks to its strong resistance, Muscat Bleu is very suitable for organic cultivation.

Wine
Although Muscat Bleu is primarily used as a table grape, it is also excellent for making aromatic grape juice. The distinct Muscat flavor is well-preserved, even during processing.

Cultivation advice
The plant grows vigorously and upright. It tolerates frost well, but prefers a sheltered spot to flower and fruit safely. Ideal for a pergola, wall, or trellis, where it can develop its long clusters.

Preparing the vine
Muscat Bleu is easy to train and prune. Its resilience and attractive yield make it a favorite among both novice and experienced grape growers.

Ground preparation

• On calcareous soil: improve with lava grit
• On sandy soil: improve with bentonite and lava flour

Planting out
Soak your vine in a bucket of water for 24 hours. This allows it to soak up some water before planting.

Plant between May 1st and 15th. Use a soil auger or spade to dig a planting hole 10 cm in diameter and 30 cm deep. Insert the graft just above the ground, so that the vine protrudes 5 to 10 cm above the ground.

Planting distance

• In line: 1 meter
• Between rows: 1.5 to 1.8 meters