Download our annual reports, newsletters, farmer guides and research papers. All resources are free — knowledge belongs to the community.
Full programme overview, financial summary, community impact stories and data from the 2024 field season across Central, Eastern and Nairobi Counties.
Download PDFTraining data, seed bank growth, outreach reach, women’s programme outcomes and full financial accountability for the 2023 calendar year.
Download PDFA condensed impact report for donors and partners — highlighting key milestones, community outcomes and return on investment across three years of programming.
Download PDFAn external evaluation of G-BiACK’s training model and field outcomes — methodology, findings and recommendations across the programme’s core activities.
Download PDFBrowse every weekly issue — 50+ editions and counting — in our full archive.
Browse Full GB-NEWS ArchiveJoin hundreds of farmers, researchers, donors and partners who receive G-BiACK’s newsletter free to their inbox. Published quarterly in English and Kiswahili.
A practical self-teaching guide covering the 8 Essential Elements of GROW BIOINTENSIVE farming — written for smallholder farmers, free to download.
Download Free“How to Grow More Vegetables” in Kiswahili — making GROW BIOINTENSIVE accessible to Kenyan and East African farming communities in their own language.
Download PDFStep-by-step cold composting guide developed from G-BiACK’s farm practice — building soil fertility from locally available materials, no external inputs required.
Download PDFHow to select, clean, dry and store open-pollinated seeds — building household and community food sovereignty through practical seed bank management.
Download PDFPractical water harvesting structures that kept G-BiACK-trained farmers productive through Kenya’s multi-year drought. Applicable on any farm size.
Download PDFEcology Action’s foundational research base covering soil regeneration, yield data, water conservation and climate adaptation evidence over five decades.
Explore ResearchHow G-BiACK, Manor House Centre and partner organisations are spreading GROW BIOINTENSIVE across East, Central and West Africa. Includes country-by-country data.
Read ReportThe Daily Nation’s investigative feature examining G-BiACK’s integrated approach, Samuel Nderitu’s methods, and how the centre has trained 30,000+ farmers sustainably.
Read ArticleA detailed look at G-BiACK’s farmer training model, seed sovereignty work and community impact across Central and Lower Eastern Kenya.
Download PDFA partner report from Baker Creek documenting seed exchange and heirloom variety trials carried out in collaboration with G-BiACK’s farmer network.
Download PDFA PELUM Kenya publication on farmer-led seed sovereignty across the region, featuring G-BiACK among the community seed initiatives profiled.
Download PDFInternational feature by Heather Day and Travis English profiling G-BiACK as a world-leading example of community-led ecological farming and seed sovereignty.
Read FeatureFood First’s profile of G-BiACK following the 2015 African Biodiversity Community meeting — a portrait of Samuel Nderitu’s vision and the farm’s impact.
Read Feature“Inside a model farm that maximises farm spaces and resources” — Nation Africa profiles G-BiACK’s integrated, chemical-free approach and 30,000+ farmer reach.
Read Article