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Plant Informational Database

Tennis Ball Lettuce

Lactuca sativa

A popular lettuce with a long history dating back as early as the 17th century. This variety yields small (to 7"), but loose heads of butterhead type leaves. It was a popular lettuce at the famous Jefferson Monticello garden and would become one of the most popular lettuces in the United States around the turn of the 20th century, after being popularized in the mid 1850's. Oddly, the traditional use was not for its fresh leaves, but whole heads were pickled in salt brine and eaten. Tennis Ball is still a popular variety today for its early ripening and compact heads that are great in salads and for fresh use.

Seed Availability

Seeds are now available at our seed store.

Days to Maturity

50 days.

Origin

Exact origin unknown, but it appears to be an American or possibly European heirloom dating well back to the 17th century.

Germination Info

Lettuce seeds are usually quite easy to sprout. Both the seeds and plants do best in slightly cooler weather, so plan on planting seeds when soil temperatures are below 70F.

1) Sowing seeds. Lettuce is amenable to direct sowing in the ground, but take care to protect for garden pests which will quickly eat or destroy a fragile seedling. For sprouting in containers, choose small containers or flats and plant seeds 1/4-1/2" deep in loose, well-draining soil. Soil temperature should be kept at 60-70F. Soil temperatures higher than 70F can inhibit germination and temperatures below 50F may do the same. If conditions are too warm but sprouting seeds is still desired, a trick is to put seeds in a wet paper towel, inside a ziplock bag. Put the bag into the refrigerator for 2-3 days then take the seeds out and sow. Properly sown seeds will generally germinate in 7-14 days.

2) Transplant/thinning. For direct sown seeds, thin seedlings to 8-12" apart, with rows up to 2-3' apart, to give mature plants room to spread out. For container sown seeds, wait until a few true leaves have developed and carefully transplant to desired location. If sprouted indoors, make sure to harden off seedlings for 3-5 days prior to transplanting. To harden off, move seedlings to a filtered light location outdoors where they can slowly adapt to sunlight and outdoor conditions.

3) Culture. Lettuce needs regular watering. Plants will grow best in loose, well-drained soils. Lettuce is very susceptible to nibbling by garden pests, particularly slugs and snails. Make sure to have proper slug barriers in place if slugs are a problem in your garden. Seeds can usually be stored for a minimum of three years.

Related Species

Asteraceae - Lettuce  
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Tennis Ball Lettuce
Lactuca sativa