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Still trying to understand seed sowing instructions

LatimerLatimer Posts: 1,068
Hello everyone,

So I just want to get my head clear on my understanding of this, I hope you don't mind this as a bit of a ramble rather than a direct question. I'm just trying to understand why we are instructed to do things in a certain way, so that as a beginner I can make better informed decisions about which seeds I should buy and try to grow.

SOW INDOORS

1. There are plants that we want to grow that require a much longer growing season, i.e. they need a longer period of much warmer weather in order to produce fruit or flowers. An example of this would be tomatoes. We could sow tomato seeds outdoors in the uk once you hit the decent weather (say June) in order that they have the heat to germinate but there wouldn't be enough time for the fruits to develop by the time the colder weather returned and killed the plant.

2. There are other plants that could grow outdoors but because we want an earlier flower or fruit from them than that would occur naturally outdoors, we start them indoors in a warmer environment so they can germinate, something it would be too cold to do outside. 

I think I understand the reasons for the above. I also understand there is more work involved, in having to harden off or that starting them off too early might mean they will germinate but there might not be enough hours of daylight a day to get a decent growth from them.

If I understand correctly, these seeds also often need a constant temperature so an unheated greenhouse or a cold frame would not be considered indoors as the fluctuation in temp from day to night is too great.

SOW OUTDOORS

Sowing outdoors seems to come with one of 2 instructions, to sow in seed trays or pots or to sow directly where you want them to grow. 

I assume it is safe to say that anything that can be sown outdoors is a hardy annual or perennial?

1. If they can be sown outdoors in trays, these don't need to be under cover? i.e. you could sow seeds into a pot and leave them in a sheltered position? However, people tend to sow things in the green house as it is a more controlled environment and potentially have less predators such as slugs?

2. Sowing directly is self explanatory but not mandatory, i.e. seeds you are told to sow directly could just as easily be sown in a seed tray or pot and grown on. If you were to do that, would it make any difference in terms of the growth of the plant? Does the plant benefit one way or the other? I understand there are exceptions, i.e. there are certain plants that don't like to be disturbed so benefit from being sown in situ.


Is there anything there I have understood incorrectly? And is there anything there you think I have missed out? 

Apologies for the long post!
I’ve no idea what I’m doing. 
«134567

Posts

  • JennyJJennyJ Posts: 10,576
    Some things are sown directly because they don't like to be disturbed once they've rooted. Struggling to think of a good example offhand though.
    Doncaster, South Yorkshire. Soil type: sandy, well-drained
  • JennyJ said:
    Some things are sown directly because they don't like to be disturbed once they've rooted. Struggling to think of a good example offhand though.

    I'm thinking perhaps parsnip or carrot?
  • borgadrborgadr Posts: 718
    JennyJ said:
    Some things are sown directly because they don't like to be disturbed once they've rooted. Struggling to think of a good example offhand though.
    Poppies are a good example.
  • punkdocpunkdoc Posts: 15,039
    The Poppy thing is another garden myth. I always grow them in modules and then plant out the little plugs, so I know exactly where they will be.
    I learnt that from Christo Lloyd’s books.
    Direct sowing doesn’t work well here, too many Pigeons.
    How can you lie there and think of England
    When you don't even know who's in the team

    S.Yorkshire/Derbyshire border
  • LatimerLatimer Posts: 1,068
    @punkdoc I’m starting to learn that so many things in gardening are myths!
    I’ve no idea what I’m doing. 
  • FairygirlFairygirl Posts: 55,117
    There are certainly lots of myths @Latimer - moving peonies - or rather -not moving them, and clematis 'roots in the shade, heads in the sun' are two classics  :D

    Re sowing direct  -Nasturtiums are another. I've often done them in small pots first, for the same reason - pigeons snaffle them. 
    It's also difficult to sow direct if your soil is heavier/wetter and doesn't warm up quickly.
    It's a place where beautiful isn't enough of a word....



    I live in west central Scotland - not where that photo is...
  • LatimerLatimer Posts: 1,068
    @Fairygirl does starting them in pots affect the lifecycle in anyway compared to a direct sow? Assuming both have the same conditions in which to germinate. Would one develop faster than the other?
    I’ve no idea what I’m doing. 
  • FairygirlFairygirl Posts: 55,117
    I can't comment on lots of plants because direct sowing just doesn't suit them here, but the nasturtiums don't seem to mind. If I direct sow them in a bed/border, they often get eaten, but if I push them into a container, at this time of year or a bit later, and protect them with netting, they're better and usually come away fine.
    Direct sowing fine seed certainly isn't easy, so trays or pots are better, as I can manipulate the growing medium, but those larger individual seeds that can be pushed in, are easier to work with. It's keeping them protected from predators that's the main problem.  :)
    It's a place where beautiful isn't enough of a word....



    I live in west central Scotland - not where that photo is...
  • bédébédé Posts: 3,095
    tldr

    I would recommend that you start with a beginners' gardening book.  The answers from us lot would be too involved fro you to follow.
     location: Surrey Hills, England, ex-woodland acidic sand.
    "Have nothing in your garden that you don't know to be useful, or believe to be beautiful."
  • Desi_in_LondonDesi_in_London Posts: 731
    edited April 2023
    @Latimer -- my anecdotal experience is ( presumably unless you prick out at cotyledon stage before roots have actually established) - each time something is repotted -- whether into a bigger pot or in the ground , it takes a few days to settle in before resuming growth, but doesn't meaningfully impact life cycle ( unless you are really unlucky with weather ). I don't really have ground to start in though, so my version of direct sowing is basically in big pots outside ( given up now, even  theoretically 9-12cm size garden ready plants get pecked to death by blackbirds or flattened by fat pigeons.).

    edit to add - apologies - I see Fairygirl said similar , my issue ( London vs scotland) is definitely pest-damage not weather.
    Kindness is always the right choice.
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