To prevent damage caused by the cold temperatures, during the months with definately harsh minimum temperatures, we can protect the shrubs by covering the soil around the stem with straw or dry leaves. The Witchhazel should be grown in a bright place, with direct sunlight.The Witchhazel should be grown outdoors; it can bear very harsh temperatures without any problems, even many degrees below zero.
Shrubs develop new shoots and prepare their flowers during the spring period, therefore we must remember, by the end of the winter, to give it a good dose of humus or mature manure, or granular slow release fertilizer, to be added to the soil at the foot of the plant. During the spring we can choose a fertilizer rich in nitrogen and potassium, to mix with the irrigating water, every 20-25 days.
These plants have a sapling deportment, with a short stem with a small roundish crown. The Witchhazel has a shrub- like development. The Witchhazel is large in size and 4 m in height; in the winter it assumes a yellow colouring. These plants aren't evergreens, which means they lose their leaves some months during the year.
Water rarely, about once every 2-3 weeks with 1-2 buckets of water , keeping the soil dry for a few days before watering again; when wetting we suggest avoiding surpluses, however to wet the soil deep down. If we want to grow these plants in a vase, we should water them a bit more often, compared to plants cultivated in the ground; Every 2-3 years we should renew the substratum in the vase, or enrich with organic amender.
Generally during this time of year we suggest a pre-emptive treatment with wide range insecticide and with a systemic fungicide, to prevent the attack from part of the aphids and the development of fungus diseases, often favoured by a mild and damp climate.
Let’s grow these shrubs in a substratum for acidophilic plants, which also has a very good drainage.
Notes - Witchhazel
These plants need to be grown in a specific soil for acidophilic plants. The indications given in this article are related to a medium size plant.