When I planted the zinnia seeds I planted in four different locations.
I thought about our prevailing summer winds. Most of our wind comes from the southwest. I planted on the north side of my house and the east side.
I planted another bed with zinnias that is somewhat protected by a tree. I did plant a few on the south side. This way I have nectar regardless of wind. The southwest, hot, dry, wind blew all day. The Monarchs could easily find food. They did not have to use up energy fighting the wind.