Few newbie questios (mainly tomatoes)
Hey folks so my first time trying to grow stuff outdoors (had some little strawberry pots on my windowsil in the past which did okay), just got a little 6ft by 4ft plastic covered "greenhouse" in the garden.
Not loads of space so I'm just trying two varieties of tomato, two types of sweet pepper, a strawberry plant and a cucamelon (cos why not?). So they're in little seed trays right now (bit late haha but I don't mind)..
My main queries are...
1) When they get bigger than being in 3" pots, are those grow bags sold for tomatoes any good or is it best just to get very big pots (well..probably a plastic bin with holes drilled in the bottom) and fill those up, I imagine that gives better depth for the roots?
2) When it comes to feeding, a lot of basic/novice guides just seem to recommend tomato feed for....a whole lot of things. Now I'd imagine that's probably not best practice for everything? Should strawberries and peppers etc be getting this too, or should I buy specialist foods for them?
3) Is just buying a good brand of compost okay for growing tomatoes/strawbs/peppers? I notice some people have quite complex mixes (well not complicated, just 4-5 different products mixed together). Is it necessary or will they do reasonably well just in compost and given appropriate food at the right time?
4) Is growing marigolds the best way to handle green/blackflies? My past attempt at an indoor cherry tomato plant failed despite getting some tomatoes off it as seemingly out of nowhere it was suddenly covered in aphids! It wasn't even the natural season for them but...it was horrific. So if you are meant to grow marigolds, must they share the tomato plants pot/grow bag or just be nearby? If they share the pot, is it as simple as just planting some seeds in there once they graduate from the 3" pots or would they not flower in time for protection and need growing now in their own pots and transferred later?
cheers for any help guys!