I have learnt to only grow half a dozen plants as that is more than enough for two of us. I sow some in March to harvest in that "hungry gap" before summer veg kicks in, and some in June to harvest for winter veg. We use our poly tunnel (which only has net on the lower sides so is not fully enclosed and a bit cooler than a fully covered one) but I think these would be fine in a cold frame or a pot on a patio that can be moved to shelter to expand its season.
This packet cost £1.95 and will last two seasons. I start them off in modules and plant out when first leaves are well formed.
I use these as pick and come again plants, taking the outside leaves as needed. These have already been picked over twice.
I checked My Supermarket today and you are paying 54p for 100 grams. Packaged supermarket spinach does not last long so having some to hand is less wasteful. I have probably picked £1.50's worth and am well on the way to covering propagation costs.
This week I have stirred a good handful into the lat stages of a chicken risotto. I usually put in a handful of frozen peas so that was a saving from brought in food.
I also put another handful under two servings of haddock which were then topped with breadcrumbs (left over bread crusts put through the liquidizer) and some grated cheese and some tomatoes sliced. Yum.
I need to leave the plants to make some more leaves so am planning on using some more perhaps at the weekend for a sausage and spinach spaghetti (see Delicious magazine web site). I have no creme fraiche in the fridge so I may have to think of an alternative like cheese sauce? I was listening to Radio 4's Food Cupboard (Jay Raynor) the other day where they suggested not have an ingredient in a recipe is an opportunity to invent a new dish!
This is an easy crop and recommend trying it!