You can plant Lilies in the Spring but planting in the Autumn allows them to establish roots and the plants will be more impressive the earlier you get them into pots.
Spring isnt the only time for planting onions ,you can plant Japanese overwintering Onions and the best tasting Shallots in the Autumn.
“It’s hard to imagine civilization without onions.”
The varieties I would recommend for taste and yield Onions Silver Moon Senshyu Red Barron
Shallots Jermor Brittany long Eschalot Grise
A dressing of calcified seaweed at planting helps with PH as onions prefer a PH around 6.5 Autumn planting is not suitable for heavy soils prone to waterlogging as the crop is more likely to succumb to disease
Over-wintered onions and shallots greatly benefit from an application of 35g per sq m (1oz per sq yd) of nitrogen-rich fertiliser such as sulphate of ammonia in late Febuary/March. This not only enhances growth but can also help suppress premature flowering. Alternatively, use dry poultry manure pellets