solution uptake of flower was measured using a balance by weighting each vase containing its solution without its flower and correcting the evaporation from the 4 evapo-control vases (vases which did not contain any flower and were located between the vases that contained flowers at differrent places) by subtracting the average of 4 evaporation data from solution uptake on a daily basis. Daily vase solution uptake was calculated as : vase solution uptake rate