 | Jasione Laevis 'Blue Light' |
 | Jasminum Beesianum |
 | Jasminum Nudiflorum |
 | Jasminum Officinale 'Clotted Cream' |
 | Jasminum Officinale 'Fiona Sunrise' |
 | Jasminum Officinale 'Variegatum' |
 | Jasminum Officinale (Summer Jasmine) |
 | Jasminum Stephanense |
 | Jerusalem Artichoke |
| Jerusalem Artichoke 'Fuseau' (Per Tuber) |
 | John Innes No 1 |
 | John Innes No.2 |
 | John Innes No.3 |
 | Jovibarba Allionii |
 | Jovibarba Heufellii 'Emerald And Ruby' |
 | Jovibarba Heufellii 'Golden Touch' |
 | Jovibarba Heufellii 'Sun And Silver Edge' |
 | Jovibarba Hirta |
 | Juglans Nigra (Black Walnut) |
 | Juncus Effusus F. Spiralis |
 | Juniperus X Media 'Pfitzeriana' |
 | Juniperus X Pfitzeriana 'Gold Star' |
 | Juniperus Chinensis 'Stricta' |
 | Juniperus Chinensis Obelisk |
 | Juniperus Communis 'Green Carpet' |
 | Juniperus Communis 'Repanda' |
 | Juniperus Conferta 'All Gold' (Sea Juniper) |
 | Juniperus Horizontalis 'Lime Glow' |
 | Juniperus Procumbens 'Nana' |
 | Juniperus Sabina 'Tamariscifolia' |
 | Juniperus Scopulorum 'Blue Arrow' |
 | Juniperus Scopulorum 'Skyrocket' |
 | Juniperus Squamata 'Blue Carpet' |
 | Juniperus Squamata 'Blue Star' |
 | Juniperus Squamata 'Holger' |
 | Juniperus X Media 'Carbury Gold' |
 | Juniperus X Media 'Old Gold' |
 | Justicia Carnea Pink |
 | Justicia Carnea Pink Dark Leaf Form |
 | Justicia Carnea White |
 | Justicia Radicans |
