(14) Frog Ponds
In the spring during the frogs’ mating season it becomes obvious why the Frog ponds (in Finnish “Sammakkolammet”) got their names! Male frogs attract the females by croaking. In April –May each female lays as many as two thousand eggs, which the male fertilizes. The eggs develop into tadpoles, which in about five weeks develop into baby frogs.
Tadpoles in the Frog Pond
In addition to frogs, calla (Calla palustris) also grows well in the Frog ponds. Its dark green leaves are heart-shaped, thick and very decorative. The flower is a spike about 10 cm long, sheltered by a vivid white flower-like leaf. Calla berries are bright red and poisonous, but the root of the plant was ground and used as flour in the past.
A calla in the Frog pond
Immediately after the Frog pond, on the right, is a riverside overlook. The bridge leading there crosses a rivulet, which has been cleared to support the production of trout fry. The sheltering plants in the water and on the shore, bowing over the stream, drop insects in the water and are important for the survival of the fry.