Mr Fothergill's 25380 Vegetable Seeds, Cabbage (Savoy) January King 3, Purple

I sowed these in a seed bed along with other winter brassicas, the purple sprouting broccoli germinated well but I only had a couple germinate from sowing half a packet. I have sown more in very small pots in a polytunnel, the gemination is better but less than 50%, fortunately enough for my needs. The packet says sow by 2025 but I do not think they will last that long.