When the peas have a height of about 15 cm, you pile them up.
On the one hand, this improves stability and, on the other hand, suppresses weed growth in the rows. With the double row method, you only pile up the outside of each row, so that the two rows of plants are pushed against each other and entwine better.
The soil must be kept loose by hoeing, as long as the plant population has not yet closed. The peas usually do not need any additional watering until flowering. The water requirement increases considerably as the pods begin to develop, so that two waterings of 20 l/m2 each are required between flowering and ripe for picking. Additional irrigation shortly before and during flowering lengthens the flowering period and thus also causes the pods to ripen unevenly, which can be desirable in the garden. The still widespread "stalks" of the peas is not absolutely necessary. The newer ones, high-yielding varieties are usually between 65 and 80cm, so that an additional support by spurs is not necessary.