Elementary: Can two of the same vegetables (red/yellow) be placed next to each other at random?

Yes. All four vegetables are distributed randomly.

Possible combinations:

• Top right field: 2 times yellow; greenhouses: 2 times red
• Top right field: 2 times red; greenhouses: 2 times yellow
• Top right field: 1 red, 1 yellow; greenhouses: 1 red, 1 yellow, each placed randomly.