A small harvest a few days ago
Every time I go into the garden there are more courgettes (zucchini) – clearly a run-away success this year. I’ve generally been weighing them when I bring them into the kitchen, and so far I’ve picked well over 7kg (15lbs) of them… not bad for mid-July, eh? Currently there are seven decent-sized specimens in the fridge, a pot of courgette soup on the stove (simple recipe: courgettes, curry powder, homemade stock, cook together, then stir in some creme fraiche and season to taste) and lots growing on the plants in the garden. Last night we did have a meal that did not include courgettes (new potatoes, lettuce, boiled eggs and homemade mayonnaise: all out of the garden except the oil in the latter), but we did have courgette soup for lunch!
However, not everyone is having my success this year, and I have been asked by a couple of people what might be going wrong. I can’t say for sure, but I can tell you what works for me.
Courgette plants in the compost bed
I always grow my courgettes in lots of compost; in fact, the bed that I use for most of them doesn’t have soil in it – it’s an in situ composting system to which I add grass clippings, leaves, cardboard, shredded paper, compost, chicken bedding and anything else I can think of every year. I have grown courgettes and squash in it for the past four years and the lack of rotation seems to have had no adverse effects. I think I add so much extra material each year that, effectively, there is always new substrate. In the winter I let the chickens onto this bed to give it a good turning and to further increase fertility. When I do plant courgettes into beds with soil, I always add lots of extra compost and water sometimes with some sort of nitrogen-rich liquid fertilizer (worm wee, for example).
Making use of lots of compost has two benefits: first, you are supplying plenty of nutrients and second, organic matter holds large amounts of water. Courgette plants are both hungry and thirsty! According to the University of Kentucky, a courgette is 95% water! So that means for every 1kg (2.2lbs) of courgette that you harvest, you need to supply 950ml (33 fluid ounces) of water. In contrast, a potato contains a mere 79% water. I, however, do not like to have to spend too much of my time watering plants, and all that organic matter saves me having to do so. I do give them a drink very occasionally, but even in June when we got a total of 58mm (just over 2 inches), I only watered them about once a week, despite the very sunny, warm weather. So far this month, I haven’t watered them at all, apart from giving the ones in the soil some liquid feed once. In drier climates, watering is likely to be required, but using lots of organic matter will certainly reduce the amount you need to apply.
Anyway, I’ll leave you with some images of the abundance… clearly the organic matter approach is working here:
Costata Romanesca from Carol Deppe
Green ribbed courgette: an early variety
UK Costata Romanesca (from Chiltern seeds)
This one is in soil and has lots of space around it