Two heartnut and a pawpaw sprout from late June.
Pawpaws will only sprout in warm temperatures as it turns out, so I have put my pawpaw sprouting bag in a food dehydrator with a thermometer to keep the temperatures in the 25C to 30C zone. It did work as I got the sprout you can see. It turns out the heartnuts are also summer sprouters so I may try the same thing with them.

Indeed next year if sprouting them in the food dehydrator works then I will try to get them to sprout in March or April, so that I can have marketable seedlings by the summer.

As it is if they sprout in the summer, then usually they will only be marketable at earliest in the autumn, though more likely next year.

Their behaviour of sprouting in the warm months is to avoid any risk of frost. However there is no risk of frost in my greenhouse so they should be just fine in there.

I am very grateful to have some heartnut sprouts, as I thought perhaps they had all died on me, but perhaps they are simply late sprouters. Anyhow the germination rate for them is up from 0% to 2%.

There is so much to learn with growing trees!

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