Table 2. Climate data for the experimental gardens.
| Experimental garden | Temperature | Precipitation | PAR | Sun hours | Growing season |
| Umeå | 14.3 (13.6±0.3) | 203 (274±18) | 4379 (4266±93) | 1114 (1119±46) | 160 |
| Lund | 16.9 (16.1±0.2) | 388 (354±33) | 4592 (4487±145) | 987 (923±57) | 210 |
Climate data for the two experimental gardens. Temperature is given as the average during the course of the experiment (Umeå: 11 May to 14 September 2006; Lund: 9 May to 21 September 2006) and the yearly average ± SE for the corresponding periods in 2002–2011. Precipitation, photosynthetically active radiation (PAR, given as photosynthetic photon density [mol m−2]) and sun hours are given as sums during the course of the experiment and yearly sums SE for the corresponding periods in 2002–2011. Growing season (days) in the two areas and all other data were obtained from the meteorological databases STRÅNG [37] and PTHBV [38].