1, old strawberry seedlings are generally useless. Because of the poor growth and development ability of old strawberry seedlings, the parasitic rate of pests and diseases is high and the resistance is low. Moreover, the old strawberry seedlings have already borne fruit, so the fruiting ability will decline. If we continue to cultivate old strawberry seedlings, the number of fruits is generally not as good as that of new strawberry seedlings.

2. When the number of old strawberry seedlings decreases and the infection probability increases, it is necessary to pull out the old strawberry seedlings and replant the new strawberry seedlings.