Plants: 132
| Latin name | Common name | Type | Description | Cultivation | Hedging |
|---|---|---|---|---|---|
| Glaucium flavum | Horned Poppy | perennial | 3ft (90cm). Oval, lobed, greyish-green leaves. Branched flower stems carry yellow, poppy-like flowers in summer, followed by long seed pods. Roots are poisonous. | Fully hardy. Sun, fertile soil. |  |
| Griselinia littoralis | shrub | 20ft (6m). Evergreen. Oval, pale green, leathery leaves. Small, greenish flowers in April and May. | Frost hardy, -5°C, needs shelter in cold regions. Sun or shade. Useful for hedging. |  |
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| HYACINTHUS genus | Hyacinth | bulb | c. 4-8ins (10-20cm). Narrow, grooved basal leaves. Scented, tubular flowers on central spike, in spring. Colours include white, pink, red and blue. Poisonous. | Frost hardy, -5°. Sun or partial shade.. | |
| Hydrangea macrphylla | shrub | 5ft (1.5m). Deciduous. Oval, serrated leaves. Many varieties. Flower In pH below 5.5, pink or red flowers. In pH above 5.5, blue or purple flowers. White not affected by pH. Poisonous. | Frost hardy, -5°C. Sun or partial shade. Remove dead flower heads. | |
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| ILEX genus | Holly | shrub, tree | c. 5-70ft (1.5-20m). Evergreen. Dark, glossy leaves with wavey, usually spined edges. Red or yellow berries. Poisonous. | Half-hardy, 0°C, to fully hardy. Single-sexed, so both sexes required for berries. Sun or shade. | |
| IRIS genus | bulb, rhizome | c.3-4ft (8-1.2cm). Long, narrow, chanelled basal leaves. Flowers have 6 petals of which 3 are large and pendent. Colours include white, yellow, pink red and blue, sometimes in combination. Spring or early summer. Poisonous. | Usually fully hardy. Sun or partial shade, some species like moist soil. | |
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| Juniper communis "Compressa" | shrub | 32ins (80cm). Evergreen. Dwarf form. Aromatic, blue-green foliage. Berries ripen from green to blueish, then black. | Fully hardy. Sun or partial shade, well-drained soil. | |
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| Juniper communis "Hibernica" | Irish Juniper | shrub | 15ft (5m). Evergreen. Columnar. Greyish blue foliage. | |
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| Juniperus communis | Common Juniper | shrub | 25ft (8m). Glossy green or yellowish needles. Aromatic. Small, green berries turn blueish then black. Varieties include "Compressa", dwarf 30in (75cm) with glaucous leaves; "Hibernica", narrow column, 15ft (5m). | Fully hardy. Sun or partial shade, well-drained soil. | |
| Juniperus conferta | Shore Juniper | tree | 6in (15cm). Evergreen. Low, spreading. Aromatic, dark or bluish-green needles. Round, dark berries. | Fully hardy. Sun or semi-shade. Good ground cover. | |
| Lampranthus aurantiacus | perennial | 20in (50cm). Semi-cylindrical, greyish leaves. Vivid orange daisy-type flowers opening in sunshine, in summer. | Frost tender, 7°C. Likes sunshine and dry conditions. | |
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| Laurus nobilis | Bay Tree | tree | 40ft (12m). Evergreen. Oval, dark green, leathery leaves. Small yellow flowers in spring, round black fruits. | Frost hardy, -5°C. Sunshine, sheltered from cold winds. | |
| Lavandula "Hidcote" | Lavender | shrub | 2ft (60cm). Evergreen. Narrow, aromatic, greyish leaves.Spikes of deep purple flowers from June, July. | Fully hardy. Sun. Useful as a low hedge. | |
| Lavatera trimestris | Tree Mallow | annual | 24in (60cm). Oval, lobed leaves. Large, pink, trumpet-shaped flowers from July to September. | Fully hardy. Sun. | |
| Leycesteria formosa | Himalayan Honeysuckle | shrub | 6ft (2m). Deciduous. Oval, dark green leaves. Funnel-shaped, white flowers with red bracts from July to September. Purple-blackish fruits. | Frost hardy, -5°C.Sun or partial shade. | |
| Limnanthes douglasii | Poached Egg Flower, Meadow Foam | annual | 6ins (15cm). Glossy, deep-cut leaves. White, scented flowers with yellow centres, from June to August. | Fully hardy. Sun and fertile soil. | |
| LIMONIUM genus | Sea Lavender | annual, perennial, sub-shrub | c.6ins-3ft(15cm-1m). Oval or narrow leaves, sometimes lobed or in basal rosette. Some are evergreen. Tubular flowers, generally blue, in summer or early autumn. | Frost tender, 10°C, or fully hardy. Sun and well-drained soil. | |
| LINARIA genus | Toadflax | annual, biennial, perennial | 6ins-4ft (15cm-1.2m). Narrow or oval, greyish-green leaves. Flowers like snapdragons, in summer. Colours include yellow, pink or purple. | Frost hardy, -5°C, to fully hardy. Sun or partial shade. | |
| LINUM genus | annual, biennial, perennial, sub-shrub, shrub | c. 2-24ins (5-60cm). Some are evergreen.Leaves are generally oval, greyish-green. Flowers are funnel- or cup-shaped flowerse in summer and autumn. Colours include white, yellow, red, or blue. | Half hardy, 0°C, to fully hardy. Sun, and shelter in cold areas. | |
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| Lonicera pileata | shrub | 5ft (1.5m). Evergreen. Spreading shrub with narrow dark leaves. Pale yellow flowers in May, then purplish berries.Poisonous. | Fully hardy. Useful for ground cover. | |
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| Lychnis flos-jovis | Flower of Jove | perennial | 2ft (60cm). Forms cushions of greyish foliage. Deep pink flowers in mid-summer. "Horts Variety" is small with bright pink flowers: "Nana" is even smaller. | Fully hardy. Sun. Tolerates poor, sandy soil. Useful for ground cover. | |
| Lycium barbarum | Duke of Argyll's Tea Tree, chinese Box Thorn | shrub | 8ft (2.5)m. Deciduous. Spiny. Narrow, greyish leaves. Funnel-shaped pink or purple flowers, then orange-red berries. | Fully hardy. Sun. Thrives in poor, dry soil. Useful for hedging. | |
| Melia azedarach | Bead Tree, Persian Lilac | tree | 50ft (15m). Deciduous. Dark green divided leaves. Scented lilac-pink flowers in spring, yellow fruits in autumn. | Frost hardy. Full sun. Thrives in dry soil. Plant away from buiidings. | |
| Myosotidum hortensia | Chatham Island Forget-Me-Not | perennial | 2ft (60cm). Big, glossy, ribbed leaves. Clusters of bright blue flowers in summer. | Frost tender, 0°C. Likes damp, sheltered position. | |
| MYOSOTIS genus | Forget-me-not | annual, biennial, perennial | 4-8ins (10-20cm). Narrow, or oval, hairy leaves. Flowers are usually blue but can be white or yellow, in spring or summer. | |
Plants: 132