I have a lovely little assortment of H&H's from Rockspray, just arrived a few days ago.

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Calluna vulgaris 'Bede Gold'

Calluna vulgaris 'Spring Torch'

Calluna vulgaris 'Red Fred'

Calluna vulgaris 'Velvet Fascination'

Calluna vulgaris 'Cuprea'

Erica carnea 'Golden Starlet'

Erica carnea 'March Seedling'

Erica carnea 'Rosalie'

Erica x darleyensis 'Silberschmelze'

Erica x darleyensis 'Kramer's Rote'

Erica tetralix 'Alba Mollis'

Erica tetralix 'Swedish Yellow'

They're in 3.5" cube pots, and naturally, their bed isn't ready yet, so I need to grow them on for a couple or few months.

What size pots should I move them up to? I expect to get them in the ground by late summer or early fall.

Anything special about in-pot care for a few months? I'll make them a nicely draining slightly acid mix.

Thanks in advance.