Posted: 11/09/2013 at 23:55
I grow pretty good carrots. I have a good sandy loam....perfect for carrots. However, they need good nutrient level, stone free and manure free soil and protection from carrot fly.
Ideally manure the previous year, dig deeply and remove stones and aim for fine lump free soil.
I have tried all kinds of carrots including the latest new and expensive hybrids. I believe though the best taste comes from carrots grown quickly without a check in their growth. So. Watering in dry spells. This year I grew the bog standard Amsterdam forcing amd early Nantes and they are sweet, (now) large and healthy.
No, I wouldnt start them off in the GH. I suggest you prepare the soil well and thoroughly adding an organic fertiliser like fish blood and bone. sow thinly but thin out when 1" or so high and again when about 2" high to about .1" to 2" apart. Water after each thinning. Cover with fleece to protect agai st carrot fly. You should have good carrots.