Rooibos Seeds Travel to International Space Station

South African Rooibos Council sends seeds aboard a cargo mission to study how spaceflight affects germination and growth.

Updated on Nov. 10, 2026 in Botany

Rooibos Seeds Travel to International Space Station

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The South African Rooibos Council has sent rooibos seeds to the International Space Station as part of the Rooibos in Space project. Seven Cederberg schools and Parklands College will compare the space-exposed seeds with Earth control seeds over 18 months.

Why it matters

The project aims to raise international awareness of the uniquely South African plant while giving Cederberg learners and communities hands-on research experience. Findings could contribute to knowledge relevant to agricultural challenges such as drought and heat.

The comparative study pairs seeds that flew to orbit with identically prepared Earth control batches, with germination and seedling growth tracked over 18 months. The mission also carries 14 other experiments from institutions across Africa and the Americas, and the seed results have not yet been reported.

The players

South African Rooibos Council

The industry body that drives the Rooibos in Space project and promotes the rooibos plant internationally.

South African National Space Agency

The national agency that collaborates on the project and oversees South Africa's space programme.

MaxIQ Space

A space company that coordinates the project's access to orbit through the International Space Station ride-share programme.

The details

The Rooibos in Space project is driven by the South African Rooibos Council with MaxIQ Space and the South African National Space Agency, with access to orbit arranged through MaxIQ Space's International Space Station ride-share programme. The rooibos experiment is booked aboard a Northrop Grumman Cygnus cargo resupply mission, and learners are receiving STEM training to plant seeds, monitor growth and collect research data.

The Cygnus cargo mission is scheduled to launch between December 2026 and January 2027.
The germination and seedling monitoring study runs for 18 months.

Big Picture

The project uses the International Space Station ride-share programme, which lets small payloads reach orbit on commercial cargo missions, to test a South African crop in microgravity. It extends the use of that programme beyond industrial and academic experiments into a national education and agricultural outreach effort.

Readers interested in the results can follow the 18-month comparison study as Cederberg learners record germination and growth data. The project's findings on drought and heat relevance will only become clear once the study concludes.

The takeaway

Plant research often relies on controlled comparisons, and this project pairs space-exposed seeds with Earth controls to isolate the effect of orbit. Students and researchers following the study can watch how the seeds respond over the coming months.

What happens next

The Cygnus cargo mission is scheduled to launch between December 2026 and January 2027, when the rooibos seeds will travel to the International Space Station.