How much space I need to get continues vegetables for a year to one family ( 5 mem) ? Please suggest and how I need to grow accordingly

I have planted few of the vegetables & fruit plants like mulberry and guava. All the plants grow well and flower but as soon as the flowers are ready they drop. This is happening to all my plants. Could you please suggest what I might be doing wrong ? And how to prepare the soil ?

i bought a dragon wing begonia 2 weeks ago.. It was more green but after 2 weeks all the blooms fell off ...how can i get it to bloom?? The plant is in good shape..but no blooms.. Ive not repoted it and heard it needs acid soil.?

Silly question, but if we cover your gardens with wood chips to protect and preserve them over the winter, we need to somehow remove and shovel up the wood chips when Spring comes around or do they mix into the soil?

I found out that in button mushroom production, the medium that they will be grown on is prepared by adding formaldehyde and bavastin (a fungicide). Could someone give me an overview of how this works and the possible toxicity related to this?

I am rotating my plants as much as they need sunlight, but only for few plants which need more sunlight.
How about you all?

What are your goals in this winter season and how you maintain it? I have my own goals, but don't know due to more cool temperature for coming true.
I want to plant tomato plants as much as I can along with spinach, mint and beans.

These are very wild in my garden and would be great for some pointers on how to keep these under control from growing very wild. i dont want to hire a professional so a few pointers would help me greatly to get these under control.

A few of these have died on me and was wondering if i did somthing wrong, how much sunlight, best room to have them in and how much water will keep them alive and growing perfectly,

someone did say i can get plant food to help is this true and is there a specific type to choose to help them.

how can we cultivate the soil ? or Will not be any damage of the cultivation process to the system during the cultivation ??