On 26/03/98 and 23/04/98, 120 Christmas roses in pots were treated with 2g penac-p in 10l water. No additional chemical treatment.

In comparison to control plants the penac-p treated plants showed hardly any damage. The leaves have show lighter and brighter green and noticeably stronger developed veins.

The stems from the penac-p plants are much stronger which is noticed when plucked off.