Jalapeno Pepper Seeds (Hot Chili Type) 1930. Our Jalapeño has moderately intense heat with some years producing peppers that are hotter than others. Irregular sized fruit averaging 9 cm (3.5″) long by 4 cm (1-1/2″) wide are produced in large amounts on plants growing 60 cm (2′) in height. Thick walled, very pungent dark green fruit turn red at maturity. An eye watering addition to salsa and dips and great for pickling. How about making some chile rellenos! Stuff with cheese, coat in batter and fry. Scoville Heat Unit Rating – 6000.