Iceberg Lettuce Germination Time

Transplant when 3-4cm high. Fall lettuce crops may have to be started indoors since lettuce has a difficult time germinating in hot weather.

How To Grow Iceberg Lettuce Guide To Growing Iceberg Lettuce

Sow What to sow.

Iceberg lettuce germination time. Loose-head varieties may sprout more quickly than heading types but all seeds depend on similar soil moisture and light conditions to support germination. Introduced in 1894 Iceberg quickly became the great American lettuce prized by gardeners and farmers alike for the crisphead varietys firm packed heads and knack for retaining freshness flavor and crunch. This is called thermo-inhibition.

It mainly depends on the variety the temperature the moisture and other factors. Crisphead types produce large hearts of curled crisp leaves and are more resistant to bolting going to seed prematurely. When buying seeds there is a huge diversity to choose from.

Careful variety selection is important for hot weather plantings. Plant in a well-drained sunny position adding Yates Hydrangea Pinking Liquid Lime Dolomite and Yates Blood Bone to the soil before planting. Butterhead lettuces have an open shape are quick-maturing and tolerate poorer growing conditions.

Lettuce is a great cold weather crop. Directly into growing position or raise in trays of Yates Seed Raising Mix. SEED STORAGE VIABILITY.

This method is best if you are planting a fall crop as the seeds may not germinate outdoors in the heat of midsummer. In good growing conditions lettuce seed will germinate within two to 12 days depending on variety. Beans Beets broccoli Carrots Cucumbers Onions Radish.

Lettuce seeds wont sprout when soil temperatures are above 80F. Once the head bolts and sends up a seed stalk the flavor has begun to decline and the lettuce may. Water regularly and apply Yates Thrive Soluble Plant Food weekly.

Do not use a heat mat when germinating lettuce seed. Optimum germination results at soil temperatures of 6065F. Hearting lettuces come in three main types.

When temperatures are too high a plant hormone is produced that stops the germination process. Exact number days to maturity varies and Iceberg lettuce plants may take somewhere between 55 and 90 days to be ready for harvest. Hot weather or too much direct summer sunlight will cause lettuce leaves to become bitter.

Picking iceberg lettuce at the right time ensures full head formation and optimum flavor. During the seed germination process make sure that your plants are getting the right amount of sunlight the soil is consistently moist and the temperature is maintained between 15-20C. Grow it in the spring and early summer or save it for the fall.

Cos types have an upright oblong head. But they will start to germinate as low as 40F making them ideal for early- and late-season planting. Lettuce seed can enter thermal dormancy when exposed to high temperatures.

Cold Storage at 4C Fridge up to 2 years. Cool-green medium-sized heads with fringed ruffled outer leaves have pale silvery-white hearts. Lettuce seeds usually take 7 to 10 days to germinate.

Sow every 3 weeks for a continuous supply of fresh lettuce.

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