�Oh Happy Day� is a cross between a very blight-resistant North American variety and a tasty French Marmande type. In T&M trials, �Oh Happy Day� resisted blight infection for three weeks longer than �Mountain Magic�! Clusters of 3-7 tomatoes, each weighing approx. 150g have a fabulous balance of sweetness and acidity. Grow as a cordon outdoors and best �stopped� after 5 trusses. Excellent resistance to both early and late blight.