In 2019 Marshalls sent me two different varieties to trial which were Alliance F1 and Tyson F1 again due to the leg injury I didn't get the infrastructure in to trial both varieties in 2019.
The results with Marshalls Alliance F1 Hybrid Sweetcorn were nothing more than spectacular (see photos of harvest here) and I have to say they were the best Sweetcorn that I have grown to date, Tyson F1 were good but not as good as Alliance.
This year I'm going to trial the Marshalls Moonshine F1 - 50 Seeds - £2.99 - packed year ending 03/21 and best before date 09/2022 and hope they produce as good if not better than the Alliance F1 Hybrid, only time will tell.
With the Marshalls Moonshine having a huge 50 seeds per pack, I actually have enough seeds for two beds of 18 plant = 36 plants and thus only need a 72% Germination rate.
However if I made two planting sheets like this
Knowing I will not get 100% germination I could have two beds of the Marshalls seeds and hope for 96% Germination, I can always put something else in the corner of a bed if I get worse germination rate. Or go for a 24 hole sheet and a 21 hole planting sheet.
New! Sweetcorn Picasso F1 - 35 Seeds - a New Variety to Mr Fothergill's - Costs £2.95
Two number 3 x 6 = 18 hole sheets would give 36 planting holes, however one never gets 100% germination.
New! Sweet Corn Illusion F1 - 25 Seeds - a new variety from Dobies - Cost £2.99
A planting sheet like this 21 hole version would be ideal and would allow for 84% Germination, in the unlikely event of near 100% germination I could use the 24 hole planting sheet.
If possible I like to have two beds of sweetcorn. I'm always up for trying out new varieties, But I think what I have found is that I need to make a 24 hole and a 21 hole planting sheet to cover all the bases.
At the moment I have two beds planned as far away from each other because I thought I may have two different varieties growing, however if I go for Marshalls Moonshine I can place the beds next to each other which will be better for pollination.