Purchase all the plant patches in the garden - this will help you grow more produce simultaneously.
You can use one plant patch for growing peppers, and the other one for tomatoes.
The Tomato Paste Factory will help you earn enough money to build the Sauce Factory.
Grow twice as many tomatoes as peppers to maintain continuous production at both factories.
Uninterrupted production in all factories means higher profits! 
You can order sugar for your popcorn by helicopter. In this mission, you only need to grow two corn, order one pack of sugar and produce one sauce for popcorn production.
Note that it is more profitable to produce popcorn with sauce than with sugar. Grow more tomatoes and maintain constant production at the Tomato Paste Factory to make it more profitable.
Start from production of popcorn with sauce, which will allow you to earn more money and upgrade all your factories to Level 3.
Instead of using the sugar to make popcorn, you could sell it.
Start by producing wine - a profitable product. Salad production requires oil, which can be delivered by the helicopter for this mission.
Remember, higher level factories will produce more goods.
Start with wine production - a profitable activity. If you require more of a product to complete a mission, you don't need to upgrade any factories - just try spending the money elsewhere...
Organize your production chain so that all the factories work simultaneously. This will let you complete missions faster. Purchase more plant patches in order to grow enough plants to meet your production needs.
The more plant patches you have, the more plants you can grow.
Check the products you receive as a bonus at the beginning of the mission. They may be enough to start production in the factories right away. Also, salads can earn you good money for new stuff.
Not all of buildings guarantee good profit though. If your only goal is earning money, try to concentrate on profitable goods requiring few resources, like bread.
Earn enough to build the Winery - wine is profitable and quick to produce. If you have enough money, you can order the required products by helicopter earlier.
Plan ahead for what goods you may need. Monitor product quantities - any errors here will result in costly delays. 
The best way is to start with production of profitable goods, and with the money from them, move on to the other products. 
If you have sufficient funds, order by helicopter, which will save valuable time.
Wine production can help you earn money to build other buildings and purchase necessary products.
If you buy a new helicopter in the Store, an additional goods slot will be added, and you will be able to order more products at once.
It is cheaper to produce ice-cream than honey.
With sufficient funds you can hire more workers and start production in all factories at once.
It's a good idea to start production with goods for which you already have the ingredients. Also, try producing honey and perfume at the same time, since they both only need flowers.
Coffee is also very profitable!
Your income from coffee and tea production can help you increase tequila production speed.
Don't forget to check the Store and purchase upgrades to make your life easier.
The more plant patches you have, the more plants you can grow.
All products have unique prices. Some of them are profitable, some of aren't...
Remember to upgrade your pickup trucks at the Store!
You can increase warehouse capacity by purchasing an upgrade in the Store.
Not all of buildings guarantee good profit though. If your only goal is earning money, try to concentrate on profitable goods requiring few resources.
Check the products you receive as a bonus at the beginning of the mission. They may be enough to start production in the factories right away.