| Garrya elliptica 'James Roof' (AGM) |
| Garrya x issaquahensis 'Glasnevin Wine' |
| Gaultheria mucronata 'Lilian' |
| Gaultheria mucronata 'Signaal' |
| Gaultheria procumbens (AGM) |
| Gaultheria shallon |
| Genista aetnensis |
| Genista hispanica |
| Genista lydia (AGM) |
| Genista pilosa 'Vancouver Gold' |
| Genista tinctoria 'Royal Gold' |
| Grevillea alpina |
| Grevillea rosmarinifolia |
| Griselinia littoralis (AGM) |
| Griselinia littoralis 'Bantry Bay' |
| Griselinia littoralis 'Variegata' |