Invasive Species Compendium

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Abstract Full Text

Wild flower seed yields in northern Finland.

Abstract

The characteristics of different wild flowers in cultivation were studied at the Lapland Research Station of MTT Agrifood Research Finland in Rovaniemi during 1996-1999. The main aim of the study was to clarify the opportunities for commercial production of wild flower seeds in northern Finland. In the experimental fields the winter hardiness, seed yield and germination of 16 different wild plant species were observed. On the uncovered experimental plots the mean seed yields were 1.9-67.6 m-2 and 13 400-364 400 seeds m-2. On the plots covered by black plastic sheeting corresponding yields were 1.8-93.7 g m-2 and 10 700-798 800 seeds m-2. The seed yield by weight was high in Ranunculus acris, Rumex acetosella and Solidago virgaurea. The largest numbers of seeds were produced by Lychnis viscaria, Campanula rotundifolia and Rumex acetosella. The seed yield of Silene dioica declined in the third production year. On average, Erysimum strictum, Antennaria dioica, Ranunculus acris, Lychnis viscaria, Knautia arvensis and Campanula rotundifolia had the best germination. The results showed that seed production of early flowering and ripening wild plants is possible in the short growing season of northern Finland. Wild flower seeds of this northern origin can be available for landscape maintenance and the promotion of biodiversity in cultivated grassland.