Annuals and Biennials
Includes biennials. All of these plants will also appear in one of the Camden Park catalogue categories, usually Herbaceous Plants.
Godetia grandiflora Lindl.
Stout-stemmed, bushy annual with oblong leaves and leafy raceme of satiny, saucer-shaped flowers, usually rose-coloured with a deeper cente, but in garden varieties ranging in colour from red to white. To 30cm. [RHSD, Hortus].
Helichrysum robustum Paxt. var. roseum
Elichrysum robustum is a hardy annual usually with white flowers although the variety roseum has pink flowers. [JD].
Hesperis matronalis L.
Fully hardy rosette-forming biennial or short-lived perennial with racemes or panicles of white, lilac or purple flowers in late spring to mid-summer. To 90cm. [RHSE, Hortus].
Hibiscus cannabinus L. var. lindleyi
Half-hardy, erect, almost unbranched, fast-growing annual or short-lived perennial with palm-like, 3- to7-lobed leaves, to 15cm long, and single or few-flowered axillary racemes of funnel-shaped, pale yellow or purple-red flowers with crimson-red centres, from summer to autumn. To 3.5m. The variety Lindleyi has deep purple flowers. [RHSE, Hortus].
Iberis umbellata L.
Fully hardy, bushy, mound-forming annual with abundant, small, scented, white, lavender, purple, pink or crimson flowers in spring and summer. To 30cm. [RHSE, Hortus].
Impatiens balsamina L.
Frost tender, sparsely-branched annual with cup-shaped, hooded, pink, red, purple or white flowers in summer and autumn. To 75cm. [RHSE, Hortus].
Ipomoea coccinea L.
Frost tender annual twining climber with entire or toothed leaves, to 14cm long, and racemes of 3-8 scarlet flowers, to 2cm across, with yellow throats, in summer. To 4m. [RHSE, Hortus].
Ipomoea coccinea L. var. luteola (Jacq.) House
Frost tender climber with heart-shaped, hairless leaves and orange-red flowers with a yellow centre. See Ipomoea coccinea L. for more details of the species.
Ipomoea hederacea Jacq.
Ipomoea caerulea splendens is probably a form of Ipomoea caerulea Roxb. ex Ker-Gawl., a synonym of Pharbitis hederacea. Annual climber with cordate, 3-lobed leaves and blue or pale purple flowers. [RHSD. Hortus]. See also Pharbitis hederacea (Jacq.) Choisy var. dillenii .
Ipomoea hederacea Jacq. var. dillenii
Annual climber with cordate, 3-lobed leaves and blue or pale purple flowers. [RHSD. Hortus]. I have been unable to discover how dillenii differs from the type. See also Ipomoea hederacea Jacq.
Ipomoea hederacea Jacq. var. grandiflora
Frost tender, annual twining climber with slender, densely hairy stems, ovate to rounded, usually 3-lobed leaves, to 12cm long, with tapering points, and cymes of 2-5, funnel-shaped, blue, sometimes purple flowers, to 3.5cm across, with white tubes and prominent, long-tailed, green sepals, in summer. Grandiflora is an improved form with larger flowers. To 3m. [RHSE, Hortus].
Ipomoea purpurea (L.) Roth var. major
Frost tender, annual twining climber with slender, hairy and bristly stems, ovate, entire or 3-lobed leaves, to 10cm long, and cymes of 3-7, sometimes single, trumpet-shaped flowers in pink, purple-blue, magenta or white, sometimes striped, mainly in summer. To 3m. [RHSE, Hortus].
Ipomoea purpurea (L.) Roth. var. violacea
For a brief description of the species see Ipomoea purpurea (L.) Roth. var. major. Violacea has deep violet or violet-purple flowers. A double flowered form also exists.
Ipomoea quamoclit L.
Frost tender annual twining climber with deeply divided, feathery leaves and slender-tubed, scarlet, sometimes pink or white, flowers in summer. To 6m. [RHSE, Hortus]. Attractive as much for its feathery foliage as for its striking flowers.
Ipomoea tricolor Cav.
Tender deciduous twiner with cordate leaves and reddish-blue trumpet-shaped flowers. Often grown as an annual. [JD, RHSD, Hortus].
