|Danvers||Gardner||Late April||Late June|||
|Danvers||Gardner||3 wk before last frost||n/a|||
|Danvers||Gardner||2-4 wk before last frost||60 days before first frost|||
(*): Customized for Manchester UK
Avoid using fertilizer or too much manure when planting.
Fertilize with a balanced fertilizer 5-6 weeks after sowing.
|General||50||50||200||Sidedress (30-50N)||assuming 400 cwt/acre yield|| (*)|
|General||50||100||100||Sidedress (20-60N)||Total lbs/acre|||
|General||50||50||100||Sidedress (25-30N)||Total lbs/acre|| (*)|
|General||50||100||200||Sidedress (25N)||Total lbs/acre|||
(*): Indicates that the value was optimized for the NUF Garden's Soil Test.
|Type||Seed Weight||Germination Time||Time to Maturity||Source|
|Danvers||18,000/oz||6-17 days||75 days|||
|Danvers||n/a||14-21 days||70 days|||
|Danvers||n/a||10-25 days||60 days|||
|Type||Purpose||Depth||Trench Spacing||Seeding Spacing||Thinning||Seed Rate||Source|
|Danvers||Gardener||n/a||rows||(~5.4 seeds/inch)||1"||1 oz per 280 linear ft|||
|Danvers||Gardener||1/4"||rows||4 seeds/inch||1.5-4"||2.4M/100 ft row or 1044M/acre|||
|General||Commercial Fresh||1/8-3/8"||18"||18-24 seeds/ft||12-14 roots/ft||2-4 lbs/acre|||
|General||Commercial Baby||1/8-3/8"||18"||24-35 seeds/ft||18-24 roots/ft||4-6 lbs/acre|||
|General||Commercial Processing||1/8-3/8"||18"||12-18 seeds/ft||8-9 roots/ft||1-2 lbs/ft|||
Some sources say to thin twice - once at 2" high (to 1" apart), and again 2 weeks later (to 3-4" apart)
The trick with carrot seeds is to sow them shallowly and then maintain moisture in that top layer of soil until they germinate. Because they may take as long as three weeks to germinate, this can be challenging, especially in hot weather when the surface of the soil is nearly always dry. The way to achieve this is to water very deeply prior to planting, and then either water very regularly or employ some other means to reduce evaporation. Some growers like to use lightweight row cover, which helps to maintain moisture and has the added benefit of keeping away the dreaded carrot rust fly. But we’ve also seen some growers simply lay a 2×4 beam, or even plywood, over the damp seedbed. This is lifted every few days to check on progress, and then removed at germination.
Water at least one inch per week.
Danvers carrots are quite heat tolerant and resist splitting.
Young carrot seedlings can withstand light frosts, but hard frosts heave the soil and break the taproots, which results in stubby and forked carrots. Young seedlings are burned off easily by high temperatures that occur before the plants are 1 inch high.
Although mature carrot leaves can tolerate several nights of frosts with temperatures in the mid-20°F range, they will be killed when temperatures fall below 20°F for several hours. Because leaves are needed for harvest, recoverable yields of roots decrease as leaves are killed by frost. Healthy tops resist frost better than blighted tops.
Irrigation must be used to get good carrot stands. Apply 1⁄2- to 3⁄4-inch of water every 4 to 7 days to prevent soil drying until carrots emerge. After emergence, irrigate weekly for the first 3 weeks. After the crop is established, irrigate occasionally to keep the crop growing rapidly.
Harvest at least ½ inch in diameter.
Can be harvested smaller (as baby carrots), but is 1.5 inches in diameter (6-7" in length) at maturity is ideal for processing.
For fresh market, 0.75-1.25 is ideal length.
Peak harvest period lasts about 3 weeks. Late summer sown carrots are sweetened after having been kissed by light frost, but please harvest before soil freezes, which would destroy the crop.
|General||Gardener||n/a||7-10 lbs||10 ft row (1.5-2" spacing)|||
|General||Commercial Fresh||n/a||8.8 (avg) 15 tons (high)||per acre (2-3 lb seed)|||
|General||Commercial Mini||n/a||11 tons||per acre (4-5 lb seed)|||
|General||Commercial Processing||n/a||35-40 tons||per acre (1-2 lb seed)|||
|General||Commercial Fresh||n/a||8-12 tons (20 high)||per acre (2-4 lbs seed)|||
|General||Commercial Processing||n/a||12-14 tons (30 high)||per acre (1-2 lbs seed)|||
|General||Commercial Baby||n/a||4-6 tons (8-10 high)||per acre (4-6 lbs seed)|||
You may leave mature carrots in the soil for temporary storage if the ground will not freeze and pests aren’t a problem.
To save harvested carrots for winter use, prepare them by twisting off the tops and removing excess soil, but don’t wash them. Layer undamaged roots (so they’re not touching) with damp sand or peat in boxes topped with straw. Or store your fall carrot crop right in the garden by mulching the bed with several inches of dry leaves or straw.