A-List is a great idea. The system was built to identify grass varieties that perform well, and when a blend is put together properly around it, you get an excellent result. So this isn’t a knock on the programme. It’s worth understanding, though, how A-List blends actually work, because there’s a part of it that often isn’t made clear to the public.
What is A-List seed?
The A-LIST® system is a turfgrass performance accreditation programme, run by the Alliance for Low Input Sustainable Turf. It was developed to identify grass cultivars that perform well under lower-input conditions, such as reduced nitrogen, lower irrigation, and better disease tolerance.
In simple terms, it’s a testing programme for turf varieties, and a good one. The varieties that earn the A-List logo have been through years of proper testing.
But the thing to understand is that an “A-List blend” doesn’t mean every seed in the bag is an A-List variety.
How an A-List blend is actually made up
Under the A-List blend requirements, a blend must contain at least 65% A-List approved varieties. The remaining portion only needs to be bona fide certified turf varieties.
That means up to 35% of the bag can be made up of non-A-List cultivars.
To be fair, the rules do exclude forage ryegrass, uncertified seed, and VNS (“variety not stated”) seed. There’s also a diversity rule: no single variety can make up more than 35% of the blend. So it’s not a case of “anything goes”.
The practical issue is consistency. The A-List portion will always consist of approved varieties, but the certified filler making up the rest can be swapped for whatever’s available and cost-effective at the time. The bag you buy this year and the bag you buy in a year or two might not be the same blend, even if the label is the same.
Why this matters in real lawns
In the professional turf world, consistency matters: texture, colour, growth habit, recovery, winter activity, leaf width, and disease tolerance.
If you overseed an existing lawn with a blend, and the filler component differs from what was applied originally, you can end up with different shades of green and growth rates that don’t match the rest of the lawn. Once you introduce that variation, it can stay there for years.
The A-List varieties themselves are proven. The variable is the rest of the blend.
What to ask your supplier
Some suppliers run 100% A-List varieties in their blends, with no cheaper filler at all. That’s the standard worth looking for, because every seed in the bag is a proven variety and the blend stays consistent batch to batch. If you’re going down the A-List track, it’s worth asking your supplier straight up whether their blend is 100% A-List, or the minimum 65% with certified filler making up the rest.
Other suppliers use the cheaper filler option to reduce costs. It’s still certified seed, so it’s legitimate, but it’s variable, and it’s not always the same from one season to the next.
A note on the wider industry
The turf seed industry isn’t tightly regulated. There’s not a lot stopping a supplier from putting cheaper, lower-grade seed into a blend and labelling it in a way that sounds better than what’s actually in the bag.
At NZLA we’ve turned down low-grade blended seed and low-germination seed lines that have been offered to us cheap, because that stuff is rife in the industry and it’s not what we’re willing to put our name on.
Find a supplier with a reputation worth protecting and buy from them.
Where we stand
For the record, we use 100% A-List varieties in some of our own blends. We don’t publish the exact make-up of our seed. As the brand has grown that information has become commercially sensitive, so we keep it in-house. But the point of this article isn’t to push our seed over anyone else’s.
The point is that certification sets a minimum standard, but consistency still depends heavily on the supplier behind the product.
For us, that accountability is built in. We’ve got a 20,000-strong community Facebook group around our products, and any slight issue gets magnified fast in there. That’s not something we’re willing to risk.
So whoever you buy from, A-List or otherwise, back the supplier before you back the badge.
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