Right size of pots for seeds/transplanting?

DEBTMONKEY1A

Hi all...the garden adventure continues(!)

Ok...bought some 5 pack seed trays at wilkinsons...trays of 15, 24 & 40 (obviously 40 being smallest!).

So which size do I appy to the following (hoping to do as little transplanting as possible!).

1-3 inch tall growing cerise tomatoes-2 leaves on each plant.

2-TINY (god they'll be hard to move!) alpine strawberry plants (1cm high-2 leaves) will put I guess more than one in a pot (!)

3-Jalapeno chilli sprouts-1 1/2 inches high-2 leaves

4-busy lizzies (1 cm high-2 leaves-probably need to do 2 to a pot?)

5)-nasturtium seeds-3 varieties-going to sow direct to greenhouse

6)-Mixed half/& hardy climbing annuals -sowing from seed (probably leave inside for 7-10 days till germinated then greenhouse)

7)-Petunia (again will leave inside till grown abit-only just sprouting)....at what size to transplant??

8)Mixed border flowers (was going to sow directly to greenhouse)...antirrhinum, aster, livingstone daisy, lobelia sapphire, viola johhny jump up.

I have some 'fleece' to cover young plants if needed & a largish, walk-in plastic (well weighted!) greenhouse.

Sorry to mither you good folk but I'm new to this....THANKS!

If any of my ideas are wrong please advise (!)

DEBTMONKEY1A

Can anyone advise? Hoping to do this later this pm.

peter_the_piper

I'm not the right person to offer advice on the cell trays you have chosen as we normally stick the plants, of a size similar to yours, either directly into a 3"/0cm pot or into a double six pack.
Toms, chillies and nasturtiums into the pots and the rest into the largest cell, presumably the 15 one.
None of them are suitable for outside for a while yet as we are still getting frosts even down here, put in the poly tunnel and either heat or cover with fleece. (heat is better but not always practical)
When the weather man/girl says there will not be frosts then stick them out but be ready to fleece them just in case. Now is the most delicate part of the year, frosts can come and go from 5-6am and you only know there's been one when the damage shows.

DEBTMONKEY1A

Thanks! Will take your advice!

knithryn

You've listed a lot of seeds, and mentioned that you have even more so here's a quick way to decide.
Bigger seeds in bigger pots.
Any teeny seeds eg lobelia, which will be planted in clumps, use a teeny pinch of seeds to each module.
Pot up into a gibber size when the roots have reached the bottom of their module (you might have to gently tip one plant out, or look for roots poking through the hole at the bottom).
Hardy means the seeds can be sown directly outside.
Half hardy means you start them indoors and then harden them off by putting them outside during the day for a few days, and then plant out.