Fig 4. Plant height of eleven Ambrosia artemisiifolia populations in a reciprocal common garden experiment.

Gardens were located in Uppsala, Sweden (N 59° 48´ 55”, E 17° 38´ 47”) and in Osijek, Croatia (N 45° 31´ 16”, E 18° 40´ 54”). Latitudes refer to sites from which seeds were collected (for details of populations and exact latitude information see Table 1).