Nikko Day Lilies (Hemerocallis dumortierii)
Flowering period: June to July
Nikko day lilies grow in mountainous areas and sub-alpine meadows. The bloom of each individual flower lasts only one day and together those flowers create the image of a yellow carpet.
Sawaran Orchid (Eleorchis japonica)
Flowering period: June to July
The height of the flower stem is 15 to 30 cm.
Asian Pogonia (Pogonia japonica)
Flowering period: June to July
The plant height is 10 to 20 cm. In recent years, the wetlands have been steadily decreasing and so the habitat of this flower is also threatened.
Water Shield (Brasenia schreberi)
Flowering period: June to July
The diameter of the flower is about 2 cm. Water shields that have a very slimy coating are considered to be very high quality plants. One popular association with summer is the image of old local ladies picking water shields.
Canadian Dwarf Cornel (Cornus canadensis)
Flowering period: June to August
The Canadian dwarf cornel is in the same family as the American flowering dogwood.
Alangiaceae (Alangium platanifolium var. trilobum)
Flowering period: July
The flower length is about 3 to 5 cm and its six petals have a strong curvy shape. In the dark forest its white colour makes it conspicuous.
Siberian hydrangea (Hydrangea serrata var. megacarpa)
Flowering period: July to August
The flower diameter is 10 to 17 cm, and decorative flower is blue to light blue with a diameter of 2.5 to 4 cm. This hydrangea is distributed along the Sea of Japan side from Hokkaido to Kyushu, and is commonly seen in Urabandai.
Purple Loosestrife (Lythrum salicaria)
Flowering period: July to August
The purple loosestrife is a cold-resistant perennial of Japan and the Eurasian continent, but of Mediterranean origin. You can often see it in wetlands.
Ooubayuri Lily (Cardiocrinum cordatum var. glehnii)
Flowering period: July to August
This giant lily blooms in the western part of the Kanto region and has several flowers on each plant, although the subspecies of giant lily in this area may have more than 20 flowers. There are about 500 seeds in each flower.
Akushiba deciduous shrub (Vaccinium japonicum）
Flowering period: July to August
The flowers grow to a diameter of 1 to 2 cm and the tree grows to a height of about 20 to 50 cm. The flowers are pale pink, and the petal curl is very splendid. This tree is used to make a lye.
Willowherb (Epilobium pyrricholophum)
Flowering period: August to September
The willow herb is a perennial plant which grows to a height of 15 cm to 90 cm in the wetlands of hilly areas. Vermiform hair grows on its stems, and the leaves and stem turn red in autumn.
Ezorindo Gentian (Gentiana triflora var. japonica)
Flowering period: August to September
The roots of the ezorindo gentian are bitter and have some medicinal benefits. It is used for treating gastrointestinal disorders such as indigestion and loss of appetite.
Hotsutsuji shrub (Elliottia paniculata)
Flowering period: August to September
The Hotsutsuji leaf small shrub of the azalea family is commonly found in sunny mountainous areas throughout Japan in southern Hokkaido.
Double-Spotted Swertia (Swertia bimaculate)
Flowering period: August to September
The green spots are honey glands which attract ants.