SADC at a Crossroads: What Seed Trade Harmonisation Teaches Us About Regional Integration

A maize variety bred and released in Zambia should, in principle, be available to a farmer in Malawi or Zimbabwe the following season. The agronomy does not stop at the border. The rainfall patterns do not check for a passport. For more than twenty years, the official position across Southern Africa has been that seed should move as freely as the science allows. That was the promise of seed harmonisation. Two decades on, the promise is still mostly a promise.

I find the seed story useful precisely because it is unglamorous. Nobody marches about variety catalogues. But if you want to understand why regional integration in Africa keeps stalling, the seed file tells you more than most trade summits do.

The policy was never the problem

It is worth being clear about what the region actually built, because it is genuinely good work. The groundwork began in 2001 with the SADC Seed Security Network, which gave member states a forum to align their technical rules. In 2007 the SADC Council of Ministers approved the Harmonised Seed Regulatory System. A memorandum of understanding to operationalise it followed in 2009. By 2014 the SADC Seed Centre had established a regional variety catalogue and database, and to date more than a hundred crop varieties across seven crop types have been registered into that regional system.

On paper, this is exactly what integration is supposed to look like. Common standards for variety release. Shared certification rules. A single catalogue that, in theory, lets a registered variety travel across sixteen countries without sixteen separate approval marathons. The design is sound. The economics are obvious. Cheaper seed movement, more varieties reaching farmers, more reason for seed companies to invest in the region rather than around it.

So the question is not why the policy was badly designed. It was not. The question is why, after all of that, getting seed across a border still takes longer than it should.

Where it actually stalls

The answer sits in an unfashionable word: domestication. A regional agreement does not change anything by itself. It has to be written into each country’s own seed law before a customs officer or a national variety committee will act on it. Sixteen sovereign legal systems, sixteen parliaments, sixteen sets of national priorities and national seed industries with their own views on how much competition they want from across the border.

That is where the momentum drains away. The clearest evidence is almost embarrassing in its plainness. The charter that formally establishes the SADC Seed Centre, the body meant to run the whole system, sat for years with three signatures on it: Botswana, Eswatini and Mozambique. Zimbabwe added a fourth in July 2024, signing the charter and the plant variety protection protocol together. Four, out of sixteen, and full operationalisation of the Centre requires a two-thirds majority.

I should be fair about the rest of the picture, because it is better than that number alone suggests. Madagascar, Mozambique, South Africa, Zambia and Zimbabwe have aligned their national seed legislation with the regional system, and eight more member states are in the process of doing so. The domestication is happening, country by country, slowly. What has not happened is the collective step of standing up the body that is supposed to run the thing they have all agreed to. Research on non-tariff measures in SADC agricultural trade finds that the gap between regional commitment and national enforcement generates more trade inefficiency than formal tariffs do (Kalaba et al., 2016). That is the irony of the harmonisation project: the expensive part is not the agreement, it is the unglamorous work of making the agreement real.

A regional agreement that has not been written into national law is not a market. It is an aspiration.

None of this is because anyone is against cheaper seed. It is because domestication is slow, technical, and politically quiet work that no minister gets credit for. Signing the regional agreement happens at a summit, with cameras. Amending the national seed act happens in a committee room, over years, competing with every other thing a small agriculture ministry has to do. We keep celebrating the signing. The signing was never the hard part.

I have a specific moment that has stayed with me.

Zimbabwe had a severe drought. Crop failure was widespread enough that farmers across the region went into the following planting season with nothing held back from the harvest before and a depleted local supply. Seedco Zambia, a few hundred kilometres north, had what was needed. Seedco Zimbabwe was asking for it. Same company. Same seed. Different side of a regulatory border that the regional harmonisation framework was designed, in principle, to dissolve.

The seed did not move. The variety grown and certified in Zambia was not registered on Zimbabwe’s national catalogue. No provision in Zimbabwe’s seed law accommodated mutual recognition, whatever the regional catalogue said. The border held, not because anyone decided it should, but because nobody had done the quiet technical work of writing the national law to reflect the regional agreement.

That is the gap. Not a policy failure. Not bad faith. Just the unglamorous distance between what a government signs in a regional forum and what the official at the border is actually empowered to do.

That gap has been documented at the farm level too. Research comparing formal and local seed systems in eastern Zimbabwe found that smallholders draw on informal networks not out of preference for informality but because the formal system does not reliably reach them, even in the years when it most should (Ncube et al., 2023).

The question the architecture doesn’t ask

There is a version of this story in which domestication succeeds. All sixteen member states sign the SADC Seed Centre charter. National seed laws are updated. Cross-border movement becomes routine. It is worth asking who benefits most from that outcome before concluding it is unambiguously good.

The formal seed market in Southern Africa is not a competitive open landscape. It is characterised by a handful of powerful private companies and the legacy of public sector dominance, a structure Kassie and colleagues have documented in detail for the regional maize seed industry. This concentration is not incidental. As Zerbe argued two decades ago in an early political economy of the sector, it is the product of liberalisation policies that were designed to attract commercial capital but that consistently failed to restructure the market in ways that serve smallholder needs. A harmonised regional system with efficient cross-border procedures is, among other things, a system that makes it easier for large, regionally organised companies to serve multiple markets from a single production base. The smallholder farmers who appear in the policy documents as the intended beneficiaries are often an afterthought in the architecture.

The policy frameworks themselves reflect this. Harmonisation efforts under SADC and COMESA have consistently followed a top-down model, driven by international institutions, that has struggled to integrate farmers’ rights or accommodate the informal seed systems that most smallholders actually depend on (Hunga et al., 2023). The framework was designed for a formal commercial market. That market exists in Southern Africa. But it does not reach most of the farmers the framework claims to serve.

Those farmers are not operating in a void. The informal seed system is not a gap waiting to be filled by formal sector expansion. It is a functioning infrastructure, locally adapted, accessible, and affordable in ways that commercial channels are often not, as Hlatshwayo and colleagues have shown in the South African context. Research tracking how smallholders actually source seed across many country contexts finds they routinely draw on both formal and informal channels at once, using whichever is accessible and affordable for the season they are in (McGuire & Sperling, 2016). Where formal seed is expensive, slow to arrive, or ill-suited to local growing conditions, informal networks supply what smallholders need for the season they are actually in. State policy has consistently neglected this system, not because it fails farmers but because it operates outside the formal structures that policy is designed to see.

This matters for how we evaluate the harmonisation project. Getting seed across borders faster is genuinely useful. But if the architecture accelerates the commercial sector while continuing to ignore the informal one, it will widen an already significant gap between the seed markets that policy builds and the seed systems that most Southern African farmers actually use. The domestication problem and the equity problem are not the same problem.

Why this matters well beyond seeds

It would be easy to file this as a narrow agricultural problem. It is not. The seed system is one of the most carefully built pieces of regional integration we have, and it is still struggling at the implementation stage. That should give pause to anyone confident about the bigger ambitions.

The African Continental Free Trade Area rests on exactly the same assumption that has slowed the seed system: that once governments agree at the regional level, the national machinery will follow. The seed experience says otherwise. Regional agreement is the easy part. National operationalisation, the unglamorous business of changing the rule that the official at the desk actually applies, is the hard part, and it is the part that is consistently underfunded and under-led.

This is the same pattern I have spent most of my career watching in investment climate reform. The reform is designed well and adopted formally, and then it stops at the gap between what the policy says and what someone on the ground actually does. Seed harmonisation is that pattern in one of its purest forms.

What would actually move it

I do not have a tidy answer, and I am suspicious of anyone who offers one. But the seed story points fairly clearly at where the effort should go, and it is not towards another regional agreement.

It is towards domestication. The slow, country by country work of helping national authorities rewrite their seed laws, build the testing and certification capacity to honour the regional catalogue, and trust that opening the border will not hollow out their own seed sector. That work is harder to fund than a regional framework and far harder to photograph. It is also the only thing that turns a signed agreement into a working market.

It also means taking informal seed systems seriously rather than treating them as a problem to be displaced. The concept of Integrated Seed Sector Development offers a useful frame: rather than building formal systems at the expense of informal ones, it calls for policies that explicitly recognise and support multiple seed channels simultaneously (Louwaars et al., 2013). That framing is more honest about what Southern African seed markets actually look like.

The link between seed access and smallholder resilience under climate stress is direct and well established (Tilahun et al., 2025). Policies that undercut the informal networks smallholders depend on in the name of regional commercial efficiency do not advance climate adaptation. They undermine it.

My recommendation, for what it is worth after sixteen years of watching this pattern: stop funding regional frameworks and start funding the national technical capacity to implement them. The region does not need another harmonisation agreement. It needs seed regulators in Harare, Lilongwe, and Maputo who have the legal mandate, the laboratory infrastructure, and the institutional backing to run the system the region already built. That is not a glamorous ask. It rarely makes it into a programme proposal. It is also the only thing that would actually change what happens at the border.

The seeds are ready to cross the border. Most of the policy is too. What is still catching up is the harder, quieter work of making sixteen countries actually run the system they have already agreed to build, and asking, honestly, whether the system they agreed to build is the right one for the farmers it is supposed to reach.

References

Hlatshwayo, S. I., Modi, A. T., Hlahla, S., Ngidi, M., & Mabhaudhi, T. (2021). Usefulness of seed systems for reviving smallholder agriculture: a South African perspective. African Journal of Food, Agriculture, Nutrition and Development, 21, 17581-17603. https://doi.org/10.18697/ajfand.97.19480

Hunga, H. G., Chiwaula, L., Mulwafu, W., & Katundu, M. (2023). The seed sector development in low-income countries: Lessons from the Malawi seed sector policy process. Frontiers in Sustainable Food Systems, 7. https://doi.org/10.3389/fsufs.2023.891116

Kalaba, M., Kirsten, J. F., & Sacolo, T. (2016). Non-tariff measures affecting agricultural trade in SADC. Agrekon, 55(4), 377-410. https://doi.org/10.1080/03031853.2016.1243059

Kassie, G. T., Erenstein, O., Mwangi, W., et al. (2013). Political and economic features of the maize seed industry in southern Africa. Agrekon, 52, 104-127. https://doi.org/10.1080/03031853.2013.798067

Louwaars, N. P., de Boef, W. S., & Edeme, J. (2013). Integrated seed sector development in Africa: A basis for seed policy and law. Journal of Crop Improvement, 27(2), 186-214. https://doi.org/10.1080/15427528.2012.751472

McGuire, S., & Sperling, L. (2016). Seed systems smallholder farmers use. Food Security, 8(1), 179-195. https://doi.org/10.1007/s12571-015-0528-8

Ncube, B. L., Wynberg, R., & McGuire, S. (2023). Comparing the contribution of formal and local seed systems to household seed security in eastern Zimbabwe. Frontiers in Sustainable Food Systems, 7. https://doi.org/10.3389/fsufs.2023.1243722

Tilahun, G., Bantider, A., & Yayeh, D. (2025). Empirical and methodological foundations on the impact of climate-smart agriculture on food security studies: Review. Heliyon, 11, e41242. https://doi.org/10.1016/j.heliyon.2024.e41242

Zerbe, N. (2001). Seeds of hope, seeds of despair: Towards a political economy of the seed industry in southern Africa. Third World Quarterly, 22(4), 657-673. https://doi.org/10.1080/01436590120071830