Spring marks the beginning of the "Blumenjahr" (eng. Flower Year) with an exhibition of orchids. From March to May you can see several types of flowers in full bloom, like Tulips, Daffodils, Primroses, Forget-Me-Nots and Hyacinths. To show the full beauty of all these flowers the so-called „Frühlingsallee“ (eng. Spring Alley) was opened, which is a path across the island surrounded by beds of these plants. From May to June over 200 kinds of Rhododendrons and Azaleas are in full bloom. To the west of the "Comturey-Keller" you can find an Italian rose garden commissioned by Friedrich I. This rose garden is strictly geometric and consists of pergolas, sculptures and fountains. In general, over 1200 kinds of roses can be found on the island.