Growing carob trees from seed – 18 month update

Last week, I put the carob trees, planted in the spring of last year, back into their cold frame for the winter.

Carob trees at 18 months

Of the seven pips that germinated, all have survived (hooray!). Two are definitely thriving; two are doing ok; and two have suffered quite severe knock backs.

Of the two that have suffered the most, one was badly affected by tortrix moth caterpillars (the main and only noteworthy pest I’ve noticed with these trees). The other one was badly damaged by sun scorch – yes, even here in north Wales!

Through the summer, the little trees have been out against a south facing fence with a little bit of shade from various shrubs. Early on in the summer, we had some unseasonably hot and very sunny days. And on one of those days, the tree which had been growing the best was scorched – it was on the edge of the group and had the least shelter from the shrubs’ shade. That sun-blast caused all this year’s growth on that tree to die back.

But, I’m not giving up on it. These are tenacious little trees. Even the one that had been pulled up by the birds and looked to be a complete disaster is still trying to grow (it too has been badly bothered by the pesky tortrix moth caterpillars).

The “runt” of the carob family: it’s been pulled out by birds and attacked by caterpillars, but it’s still putting out new shoots.

Two things I have learnt, and they’re both a bit of a surprise: the trees like a lot of water (but also good drainage); and they prefer to be in shade, not full sun (which makes sense for a baby tree really). I’ve also noticed that they grow best when there are weeds in the pot. I can’t really figure that out, but it’s something quite common with potted plants. Consequently, when I repotted the sun damaged tree, I deliberately planted some weeds in with it to keep it company:)