Tb = Pot plants
F = Frigo
WB = Waiting bed plants
T = Tray plants
Potted green plants are grown from seedlings, which due to the method of propagation do not have direct contact with the soil (this is the safest prevention against soil-borne pathogens). After pricking out, the plants are cultivated under spray until they have formed sufficient roots. Then the young plants are hardened off in several steps.
The ideal planting time for potted green plants is from the end of July to mid-August, which allows for pre-crops (ideally cereals). Due to the root ball, potted green plants can be stored for a short time, so the planting day can be adjusted to suitable weather. Irrigation after planting is necessary. In one culture plate there are 66 to 68 plants, whose root ball has a diameter of about 4 cm.
Are used only for term culture mainly in the greenhouse. Their yield potential is comparable to that of strong waiting bedding plants. They are not bare root, but have a large root ball.
Have smaller root balls and lower yield potential than tray plants.
Waiting bed plants (15-18mm/ 18-22mm/ >22mm):
Particularly suitable for term cultivation. There are 3 grades, which have different yield potential.
A standard plants (9-12mm):
Most planted grade for normal culture. In order to obtain a full yield in the following year, a timely planting date is important for a sufficiently long period of vegetative growth. Breaking out the flowers in the year of planting is recommended.
A- plants (6-8mm):
Suitable for potting or outdoor planting with a very early planting date. The flowers in the year of planting should be broken out.
Growth site requirements
If the right variety and growth site are chosen, strawberries can be cultivated at 1,500 m above sea level. Valley floors and hollows should be avoided, as cold spots can form. Equally unsuitable are heavy, compact soils that are prone to sogginess or very limy (pH > 7). Deep, humus-rich clay and loamy, sandy soils are ideal. The influence of preceding crops should not be underestimated. For example, cereals work well as a preceding crop, whereas potatoes or turnips greatly increase the risk of root diseases and nematode infestation.
Refrigerated plants: the root neck must be covered with earth.
Potted plants: spread a light covering of earth over the root balls.
Planting at the right depth is key!
Seedlings that are planted too shallow are susceptible to frost damage and dehydration. The rhizome is less able to send out new roots.
Seedlings that are planted too deep, so that the crown is partially covered with earth, take longer to develop – or, in the worst-case scenario, don’t develop at all – and are often affected by rhizome diseases.
Strawberry cultivation requires a lot of water. It is particularly important to ensure sufficient watering just after planting. This is also the case as the leaves, flowers and fruit start to develop on the plants.
Insufficient watering increases crop and quality losses. On the other hand, overwatering restricts root production and causes the roots and rhizome to rot.