WF5.2 Age
The plant, grown from seed, must have sufficient time in the container to germinate and establish a well rooted and vigorous plant. To do this, it is more important to specify that the plant has a reasonable length of a growing season in the container than a statutory number of months. For example seed germinated in the spring can be ready for supply in early summer. On the other hand, seed germinated in autumn requires a period of the following growing season (spring) to ensure vigorous plants.
Ideally wildflower plants should have one growing season in container before supply, or sufficient months of a growing season to ensure good growth and rooting.
There are exceptions to this rule. Some wildflowers establish and grow very rapidly from seed and within a matter of a few weeks can fill the container. Details of these species need to be obtained from specialist growers before specification.