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Growing Onions from Seed for the First Time

NewBoy2NewBoy2 BristolPosts: 1,804
Yellow Rynsburger Long Keeping Onions from The Real Sees catalogue

I have them in a 6" wide pot and they are about 2 or 3 inches tall

? What next please
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  • fidgetbonesfidgetbones Posts: 15,862
    Prick the seedlings out into deep boxes of soil type compost with some added fertiliser. Space them 3 inches apart. Grow them on for a couple of months then plant out. If you don't have any deep trays, use 3 inch pots.
    You don't stop doing new things because you get old, you get old because you stop doing new things. <3
  • barry islandbarry island Posts: 1,465
    Cover a bed over with a plastic cloche, if the weather turns warm and the soil feels warm in a couple of weeks transplant them into the ground 6 inches apart.
  • NewBoy2NewBoy2 BristolPosts: 1,804
    Barry Island

    I have a 12 x 4 foot bed already prepared to which I added some evry finely shredded manure 2 months ago and I feel its ready to receive seedlings

    How tall / large do the seedlings have to be before I transplant

    Everyone is just trying to be Happy.....So lets help Them.
  • NewBoy2NewBoy2 BristolPosts: 1,804
    Fidget

    I am seeking information please

    ? What is the purpose of moving the seedlings form a 6" pot to a 3" pot 

    There are about 60 seedlings which I have staggered their sowing so I can then have a continuous supply from the allotment

    Everyone is just trying to be Happy.....So lets help Them.
  • SkandiSkandi Northern DenmarkPosts: 1,446
    NewBoy2 said:


    There are about 60 seedlings which I have staggered their sowing so I can then have a continuous supply from the allotment

    Unfortunately that won't work quite as you think, Onions bulb in response to day length so they will come ready at around the same time, no matter when you sow them, sowing them early and therefore giving them longer to grow results in a bigger bulb (hopefully) than later sowings. Of course if you want green onions you can pick them whenever you fancy. Last year I put my seedlings outside on the 24th April, I also planted sets on the 21st April, the seedlings were ready for drying on the 9 august and the sets two weeks earlier on the 26th July (I am in Northern Denmark giving me a climate similar to Aberdeen)
  • NewBoy2NewBoy2 BristolPosts: 1,804
    NewBoy2 said:
    Fidget



    ? What is the purpose of moving the seedlings form a 6" pot to a 3" pot 


    This is my main question please
    Everyone is just trying to be Happy.....So lets help Them.
  • Allotment BoyAllotment Boy North London Posts: 4,987
    @NewBoy2 I think @fidgetbones is assuming (as did I) you have sown them into the 6 inch pots so there are lots of seedlings in there together. Splitting them & putting them individually into 3" pots will give them room to develop more and when it comes to planting out you can plant them with less disturbance than if you split & plant in one go. The other potential advantage is planting with a good plug of clean soil round them reduces the risk of things like white rot if you suffer from that in your area. 
    AB Still learning

  • NewBoy2NewBoy2 BristolPosts: 1,804
    Got it.

    I now need to source some 3" wide pots that are not plastic as I dont want to end up with 60 pots that I may not use again

    ? Any ideas friends as to who sells them
    Everyone is just trying to be Happy.....So lets help Them.
  • NewBoy2NewBoy2 BristolPosts: 1,804
    www.greengardener.co.uk/coir-pots.html

    Any thoughts on these types

    Sorry to be so pedantic but over the lasy 8 years since i started growing veg its been "Oh that is near enough" but i want to be more professional from now on
    Everyone is just trying to be Happy.....So lets help Them.
  • NollieNollie Girona, Catalunya, Northen Spain.Posts: 5,643
    I hate coir pots, never seem to be able to get them wet enough, they dry out really quickly and if you try watering from the bottom the bottom falls off. 

    I don’t grow onions from seed, only setts, but I do buy a local flat onion callen Figueres as sturdy plantlets, usually around 6-10” high, about six or seven crammed in a plug about an an inch across and 1 1/2” deep. I find its easy enough to tease them apart, trim any over-long roots and plant them straight out by dropping them into a hole poked in the soil. They flop a bit to begin with but soon perk up and romp away. 

    Unless you have dozens to each 6” pot (in which case you can carefully thin them to give them more room and even try potting on the thinnings if you want to keep them all), I would leave them to grow on a bit then plant them straight out. Sixty single seedlings in 3” pots is a lot of pots and seems more faff than they need. I don’t feed either as I find if you treat them too well they develop thick necks - they always go into unenriched soil and once the bulbs start to swell I stop hoeing and allow the weeds grow around them. Once they have swelled sufficiently I stop watering. All this was on Bob Flowerdew’s advice years ago and its always worked for me.
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