We’re Listening

Let’s Connect

Whether you want to donate, partner, visit the farm, enrol for training, or just say hello — we would love to hear from you. In English or Kiswahili.

Reach Us

We Read Every
Message Personally

G-BiACK is a small, passionate team and we genuinely read and respond to every enquiry. Please don’t hesitate to reach out — however large or small your question.

Address G-BiACK Farm, Thika (40 km north of Nairobi)
PO Box 4171 — 01002 Madaraka, Thika, Kenya
Phone & WhatsApp +254 720 323 134
Email growbiointensivecenterkenya@gmail.com
Directors Samuel Nderitu & Peris Wanjiru Nderitu
Office Hours Monday – Friday: 8:00am – 5:00pm EAT
Saturday: 8:00am – 1:00pm

G-BiACK Farm, Thika — 40 km north of Nairobi, Kenya

Open in Google Maps →

Send Us a Message

What brings you here today?

Asante sana! Your message has been received. A member of the G-BiACK team will respond within 2 business days.
Come See Us

Visit the
G-BiACK Model Farm

We welcome farmers, donors, researchers, students, journalists and curious visitors. Seeing the 160-bed demonstration farm in person is a life-changing experience.

How to Plan Your Visit

We ask that all visitors contact us in advance to confirm availability and arrange the best day for a guided farm walk.

1
Contact us via the form, email or WhatsApp to express your interest in visiting.
2
We will confirm a date and time that works for you and our farm team.
3
Take a matatu from Nairobi CBD to Thika town, then a short boda-boda or taxi to the farm (we provide directions).
4
Arrive and enjoy a full guided tour of the farm, beds, seed bank, composting systems and community workshops.
G-BiACK demonstration farm Thika Kenya

Who Can Partner with Us?

Donor Organisations

Foundations, churches, community groups or individuals — 100% of international funds reach farmers.

NGOs & INGOs

Collaborate on joint training, research, farmer outreach or seed sovereignty advocacy programmes.

PAN International

A global network partner with a presence in over 90 countries working to replace hazardous pesticides with ecologically sound and socially just alternatives.

Universities & Researchers

Use G-BiACK as a living laboratory for agroecology, food systems and community development research.

Governments & Counties

We work with county governments to scale biointensive training and policy adoption across Kenya.

Common Questions

Frequently Asked Questions

How can I donate to G-BiACK?
International donors can give through the Kilili Self Help Project (USA) — 100% of contributions reach G-BiACK with zero overhead deducted. Cheques payable to Kilili Self Help Project, 260 Marion Ave., Mill Valley, CA 94941, USA. For direct Kenya transfers or bank details, please contact us. You can also donate directly via our Donate page.
Can I visit the G-BiACK farm as an individual?
Yes — individuals, groups, schools, researchers and journalists are all welcome. We ask that you contact us in advance to book your visit so we can arrange a guided tour. Farm visits are generally free of charge, though group bookings are asked to make a small contribution toward farm expenses.
How long does a training course last?
Standard residential training at the G-BiACK campus lasts 3–4 weeks and covers all 8 essential elements of GROW BIOINTENSIVE farming. Shorter introductory workshops (1–3 days) are also available for groups. Community outreach training can be arranged to come to your location. Please contact us to discuss what works for your situation.
Do I need prior farming experience to train at G-BiACK?
No prior farming experience is required. Our training is practical and hands-on, suitable for complete beginners as well as experienced farmers who want to transition to biointensive, chemical-free methods. Training is conducted in English and Kiswahili.
Is G-BiACK a registered organisation?
Yes — G-BiACK is a fully registered Non-Governmental Organisation (NGO) in Kenya. We maintain transparent financial records, publish annual reports, and are accountable to our donors, community members and the Kenyan government. International donations are processed through our US partner, the Kilili Self Help Project.
How can my organisation partner with G-BiACK?
We welcome partnerships with NGOs, international organisations, universities, county governments and the private sector. Partnership can take the form of joint training delivery, research collaboration, donor funding, in-kind support or farmer network development. Please use the contact form above or email us directly with a brief description of your organisation and what you have in mind.