https://garden.org National Gardening Association (US)
www.growlikegrandad.co.uk Grow Like Grandad
https://www.nsalg.org.uk/ National Society of Allotment and Leisure Gardeners
http://www.welhat.gov.uk/allotments Welwyn Hatfield BC Allotment Web-site
http://www.allotmentgardening.org.uk/ Allotment Gardening
https://www.gardenorganic.org.uk/organic-allotment-growing Organic Allotment Gardening
https://sixbrotherspestcontrol.com/garden-pests-natural-guide/ Tackling pests naturally (US web-site)
https://www.kingsseeds.com/ Kings Seeds
https://www.rhs.org.uk/advice/grow-your-own/app Royal Horticultural Society's free app - plants of interest to "My Garden" to get information on growing, harvesting etc., including a useful monthly planner.
Something that you may not be aware of is that by being a member of the Longcroft Allotment Association you are also a member of the National Allotment Society.
The National Allotment Society is the national organisation which upholds the interests and rights of the allotment community across the UK. It works with government at national and local levels and other organisations to provide, promote and preserve allotments and offers support, guidance and advice to its members (and others with an interest in allotment gardening).
Members of our Association are entitled to free insurance and access to discounted seeds (from the Kings catalogue) through its membership the Society. The Society provides many other benefits, and its web-site contains advice on planning an allotment, crops, monthly jobs and tips on: managing water during droughts, producing your own compost, and pest control.
Its web-site also describes some traditional gardening methods, some of which are still commonly upheld, whilst others seem to have fallen by the wayside. For example, ‘planting by the moon’ is based on an ancient belief that above-ground crops should be planted during the Waxing Moon, while root crops should be planted during the Waning Moon. Surely that’s worth a try?!
For more information see the link above.