There is a potential issue with the number of plants which will require clarification via case law. Thresholds of 9x plants and 28x plants would, if they refer to all the plants within a system rather than mature plants or those plants capable of being brought to maturity, potentially restrict the capacity of user-growers to achieve self-sufficiency.9x mature plants could generate around 1oz per week over a cycle, sufficient for the consumption of all but the heaviest users in the UK, however if the total includes immature plants the production capacity could be halved. A continuous system would thus be limited to 1x mother plant, 4x cuttings and 4x mature plants, sufficient to sustain only moderate levels of use over a cycle.28x plants, if including immature plants, would in a continous system be limted to 10-12 flowering plants, 12-16 cuttings or immature plants and possibly 2x mother plants. This could well represent a personal-scale cultivation for a typical heavy user.By limiting the number of plants rather than the available space or wattage of lighting, growers will be incentivised to grow fewer but larger plants to maximise the potential yield.