Winter Density Bibb/Romaine Lettuce Seed
This Winter Density Bibb/Romaine Lettuce Seed is an open pollinated favorite. (60 days) Also known as Craquerelle du Midi, a French heirloom from the 19th century. Is it a bibb or a romaine? Any way you look at it, its thick tender dark green leaves make superb eating.
Starts out looking like a bibb then wrapper leaves fold tightly, forming a head like a romaine when mature. Combines the substance of romaine with the tender succulence of a bibb. No warm-temperature germination tolerance. Cold-hardy through at least part of the Maine winter.
About 300+ seeds per pack. Packed for 2017. Lot #381. 94% germination.
Lettuce Culture: May be started indoors in March and at regular intervals thereafter, or sowed outdoors as soon as ground can be worked. Many varieties won't germinate in soil temperatures above 75° and most shut down above 80°. Where available, we present data here from a California germination experiment at 84°.
Hardy. All lettuces except icebergs tolerate heavy frost. They grow best in cool weather with medium moisture. Use shade cloth to keep summer lettuce tender and sweet longer.
Sow every 2 weeks for continuous supply. Lettuce will not head unless thinned frequently and ruthlessly to final distance of 1'. Heavy nitrogen feeders.
Minimum germination soil temperature 35°, optimal range 40-80°, optimal temperatures 70-75°. Emergence takes 3 days at 68°soil temperature.
Days to maturity are from direct seeding.
We only ship to the first 50 states of the United States of America due to customs regulations.