I have two rocket barberries that I planted earlier this year - gold and orange.

The gold one is growing as expected, upright and tidy. However, the orange one started drooping a few weeks ago and it's getting worse every time it rains.

It's almost as if it's growing too fast, and the new soft branches can't support their own weight.

What do I do? Is there any way to encourage the branches to grow upright? I don't think trimming is an option, as I'd have to take off entire branches, and the new ones will probably grow in a similar fashion.