The German Weather Service (Deutsche Wetterdienst – DWD) uses the flowering of forsythia and the beginning of leaf development of gooseberry as markers of beginning early spring. In this season many fruit trees open their flowers (cherry, pear) and beech and birch start growing their leaves. For monitoring the early spring with our Apps we want to focus on the following species…
Early spring is coming! The phenological clock is ticking…
Wood Anemone – Anemone nemorosa
The wood anemone often occurs in large numbers in beech or mixed forests. The young flowers sometimes take on a pink hue making it look rather like a pasqueflower (Pulsatilla vulgaris) or peony (Paeonia officinalis). If you come across those beauties, please send us an observation!
Coltsfoot – Tussilago farfara
The coltsfoot forms a yellow inflorescence in early spring. Only after they have withered, the large kidney-shaped leaves begin to appear. While still blooming, the small brownish scaly leaves can be photographed as leaves for the app. It may not seem like a special plant, but their flowers are an important marker in terms of phenological monitoring. Please send us your findings!
Lesser Celandine – Ficaria verna
Lesser celandine or pilewort appears in early spring in various places. Some individuals show brown drawings on their leaves. The blooming period stretches over a long time, in most years until May. What we´re interested in is where and when the first flowers of lesser celandine appear, so please send us an observation as soon as you see it!
Blackthorn – Prunus spinosa
Blackthorn is also often called sloe. Its pure white flowers can be found on forest edges or shrubberies, where the medium-sized bush with its long thorns creates an ideal hiding space for birds. The blue berries ripen late in the year and are usually harvested after the first frost because the cold reduces the bitterness of the fruits. We would like to record the phenology of the blackthorn on the basis of the flowers and therefore ask you to photograph the flowering shrubs with one of our apps.