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Flowers - Annuals (A to C)

Annuals (A - C)
Annuals (M - O)

Annuals (D - F)
Annuals (P - S)

Annuals (G - I)
Annuals (T - V)

Annuals (J - L)
Annuals (W - Z)

Switch To Perennials     Main Flower Index

Unless otherwise noted, the following guides are for growing annuals from seed, and general care.

Ageratum [Ageratum houstonianum]
Light: Full Sun
Planting Date: Spring

Ideal for beds or borders. Ageratum (White Bouquet, Florist's Blue and Red Sea) are great for use as a cut-flower and is also well suited for bedding. The flowers are long lasting and stand atop long, sturdy stems that are prized by florists. Plants are branched at the base. Height is 24-28 inches with large florets atop 20 inch stems.

Sow seed indoors about 6-8 weeks before last frost. Sprinkle seed on moist medium and cover very lightly, since seed require light to germinate. Keep soil constantly warm 29°C and seed should germinate in 5-10 days. Plant 6-8" apart in a sunny spot after all danger of frost has passed and soil has warmed. Ageratum is very sensitive to frost. Provide good air circulation, occasionally deadhead and water during dry spells.

Amaranthus [A. tricolor/A. hypochondriacus/A. caudatus]
Light: Full Sun
Planting Date: Spring

Colourful leaves of rich red, yellow and green add an explosion of color to your gardens. Ideal as a temporary shrub. Height 3 ft.

May start inside 6-8 weeks before last frost for earlier show. Just barely cover seed and keep soil at a temperature of 21-24°C. Should germinate in 10-15 days. May be direct seeded in the garden when soil is warm. Space 12-18 inches apart depending on variety. Prefers full sun and can tolerate dry soil

Aster [Callistephus chinensis]
Light: Full Sun
Planting Date: Spring

A dwarf aster ideally suited for beds, borders or patio containers. Early flowering and easily grown. A lovely mixture of colors. Height 10-12 inches.

Start 6-8 weeks before last frost date. Barely cover seed, provide warmth (21°C) and they should germinate in 6-14 days. Very sensitive to Dampening off, keep soil on the dry side and try to water from below. May be direct seed after last frost. Space 9-15" apart depending on variety. Prefers full sun.

Bachelor's Buttons [Centaurea cyanus]
Light: Full Sun to Partial Shade
Planting Date: Spring

Brightly colored flowers of blue, rose, white, lavender and pink. Extra early bloomer that is easily grown directly outdoors. Height 16-20".

May be started early inside, but they grow and bloom very fast from direct seeding outside. Sow seed about 2 weeks before last frost. Just cover and they usually germinate in 7 days. Successive sowings will provide blooms all season. Space 12 inches apart in full sun or partial shade.

Bells of Ireland [Moluccella laevis]
Light: Full Sun to Light Shade
Planting Date: Spring

A hardy annual with pale green bell shaped calyx formed along green stems. The bells are borne, densely packed, up and down the tall, strong stems. Excellent dried or used fresh in flower arrangements. Color fades to light beige when dried. Height 24-36 inches.

Start inside 8-10 weeks before planting out. Do not cover seed. Provide light and keep cool (10-15°C). Transplant outdoors after last frost. May also be direct seeded when soil is still cool and a frost is possible. Space 6-8" apart in full sun to light shade. Water and feed regularly for tall spikes. The more you cut them, the more stems are produced.

Brachycome [Brachycome iberidifolia]
Light: Full Sun to Light Shade
Planting Date: Spring

A fragrant addition to rock gardens, containers or as a cut flower. Compact plants bearing masses of small daisy-like violet-blue, fragrant blooms.

Sow indoors 6-8 weeks before last frost or directly outside after last frost. Just cover seed and keep warm (21°C). Transplant 6-9 inches apart after last frost in full sun or light shade. Deadhead regularly and do not allow to dry out.

Calendula [Calendula officinalis]
Light: Full Sun to Very Light Shade
Planting Date: Spring

This hardy, easy to grow annual or 'pot marigold' is excellent for containers or beds.

May be started inside 4-6 weeks early, but is usually direct seeded about a week before last frost or once the soil has warmed up to 21°C. Sow 1/4 inch deep and 2-4inches apart, thin seedlings to 8 inches apart. Grow in full sun or very light shade. Remove spent flowers for a continuous bloom.

Castor Bean [Ricinus communis]
Light: Full Sun
Planting Date: Spring

Start inside 6-8 weeks before planting out in large peat pots. Soak seeds for 24 hours and cover with 1 inch of soil and provide a warm soil of 21°C (70°F). Or can be planted directly outdoors after the soil warms up and after all risk of frost. Transplant after last frost into a full sun location, 2-3 feet apart. The richer the soil, the larger this plant will grow.

Celosia [Celosia argentea]
Light: Full Sun
Planting Date: Spring

Attractive large 12 inch plumes in a colorful mix of brilliant colors. Excellent outdoor performance. Excellent for masses in beds or taller borders. Plant height semi-tall at 27 inches.

Start 6-8 weeks before last frost. Lightly cover seed and keep warm 24°C (75°F). Can be prone to damping off, keep soil on the dry side and water from below. Has poor frost tolerance so transplant outside about 2 weeks after last frost. Enjoys full sun and tolerates hot, dry areas in the garden.

Cerinthe [Cerinthe major purpurescens, Cerinthe minor auriculata]
Light: Full Sun
Planting Date: Spring

This attractive annual of Mediterranean origin is extremely easy to cultivate, is drought tolerant and is suited to many different uses including cutflower use (especially as a distinct filler in fashionable bouquets), containers, bedding and border. Grows in a graceful vase shape, flowering from June to frost.

Start seed indoors 10 weeks before last frost. Cerinthe is quite a large seed and is best sown individually. Sow on to very moist compost and cover to a depth of 10 mm with vermiculite. Propagate at 18 to 20°C and germination should begin to take place after about 10 days. Continue to maintain a temperature of 15°C for approximately 2 weeks after germination at which point it can be lowered to 10°C. Plant outdoors after last frost date 16cm (24") apart into a full sun location.

Clarkia [Clarkia unguiculata]
Light:Full Sun to Partial Shade
Planting Date: Spring

Dainty, carnation-like blooms cover the long stems in a nice mix of pink shades. This old fashioned variety is an excellent cutting flower. Sow seeds outdoors in place in early spring. Full sun or light shade. Height 18-24 inches.

Stronger plants result when direct seeded around the last frost date. Do not cover seed. Thin plants 6-8" apart. Does well in part shade. Pinch out growing tip of seedlings to encourage branching. Do not overwater.

Cleome [Cleome spinosa]
Planting Date: Spring

Graceful clouds of rose, violet, cherry and white atop lofty, strong, flexible stems swaying in the slightest breeze. An airy, elegant plant for back borders. The fragrant blooms measure 5-7 inches in diameter. Most effective when planted in groups. Blooms mid-summer to frost. Height 3-4 feet.

Start indoors 4-6 weeks before last frost. To plant seed, sow on the surface of the soil, place trays or pots in clear plastic and refrigerate for 5 days. After chilling, provide a warm soil of 24°C (75°F) and light. Transplant after all danger of frost is past, 8-10" apart.

Coleus [Coleus blumei]
Light: Shade to Full Sun
Planting Date: Spring

Easy and versatile, coleus grows nearly everywhere, in bright sun or deep shade, indoors or out, but for best results give it moisture and filtered shade. Coleus is affected by light intensity.

Sow indoors 6-8 weeks before transplanting. Soil seed on the surface of the soil, do not cover as light is required for germination. Provide a soil temperature of 21-24°C (70-75°F). Transplant after all danger of frost is past, 6-8" apart. Coleus can grow under any light condition, shade to full-sun as long as they get plenty of moisture. Pinch and remove flowers to encourage branching and full growth.

Cosmos [Cosmos bipinnatus. Cosmos sulphureus]
Light: Full Sun to Light Partial Shade
Planting Date: Spring

This airy stemmed, graceful plant is very easy to grow for beds, backgrounds or cut flowers.

May be started inside 4 weeks before last frost or direct seeded after last frost. Plant 1/4" deep in warm soil (24-26°C). Direct seed after all risk of frost and once the soil has warmed. Space 8-12" in a full sun location. Grows well in poor soil. Dead-head regularly.

All flowers listed on this page are available from Veseys.
USA Gardener Recommends Veseys Seeds & Bulbs For Great Results.


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