Ok, now we are almost in a not warm season, the weather is cold at night until very early morning until the sunrise, then it is little warm not much hot but with nice wind, and the temp is not getting high or higher than 28C even in the middle of the day when the sun is in the top middle of the sky, so it means i shouldn't plant anything outdoor yet?
Also the ground is cold in the morning, it is really cold, not as cold as where you all live, but it is way colder than the summer, 15-18C in the morning compared in summer 28C in early morning, and at night it is again cold, so maybe the plants don't feel warm at all then.
I think i did test enough seeds in pots and containers, most did germinate fine, but some died and some keep growing, in this case i just stop germinating more or starting over again when failed, and i have to focus on my garden area to prepare it so then i can make it ready for direct sow/plant and then i don't look back for transplanting or worry about how enough space/room for seedlings in pots/containers for their growth.
Are there any videos links about how to repair/prepare the grounds if they are not yet good or ready for plantation? i feel i don't understand your steps or materials to be used, you keep say mulch, i don't know what is it, and if it prevents the weeds from growing will it prevent another plants from growing too? Also if i dig deep to remove those weeds/grass from root how come they may come out if i remove from roots or i go deep say minimum 8 inches say nearly 12inches[1ft]? I will take another pics of that area where i asked the person to start digging and cleaning, you will have an idea how it looks like and what to do, I don't know how deep is that soil and the ground in my garden, but if there are trees already in back yard and some trees not very high in this side yard it means the ground is good enough for planting.
Well, from my plan drawing, i did mention a sweet corn in one row, but i didn't mention anything in next row to it, maybe i should use 2 rows then for sweet corn, i can also use that row mentioned for lettuce to be use for sweet corns too, so 3 rows in order, will this be enough to create a small or start block then? i don't want to use entire or more than 70% of that area only for sweet corn, if it is a must then i have no choice but to use 70% of it for sweet corn and then i expand that selected area to another place so i can plant something else, tomatoes for me is very very important, so that i chose the first 2 rows for 2 types of tomatoes.
Also, i still didn't know what trees are there that is very close to the wall, if they are not necessary or unwanted then i can simply remove and then the area will be larger for planting, i may keep sweet corn row in blocks to the wall towards the middle of the area, the the rest with something else.
Also you didn't tell me about what is the minimum amount of sweet corn plants i should grow for pollination and assure it will grow fine? say you have almost same that area i have, about 5 meter by 6 meter for example, how you use it if you have few plants to grow including sweet corn?