Seeds Flowers 6 g

This flowering sunflower is grown for its cheerful, sun-following blooms rather than for a crop, making it a classic ornamental annual for sunny beds, borders and cutting gardens. The bright golden ray petals around a rich central disc bring a warm, summery feel to any plot, and the strong upright stems make it a favourite for fresh-cut flower arrangements that last well in a vase. As a warm-season annual (Helianthus annuus), it thrives in long, hot summers and rewards a sunny corner with bold, eye-catching colour from mid-summer into autumn.

Planting

Direct-sow outdoors only after all danger of frost has passed and the soil has warmed to above roughly 10 C, since this warm-season annual will not germinate well in cold soil. In Egypt cold is rarely the limit; instead, plan around the extreme summer heat at flowering time. In the Nile Delta and Lower Egypt, sow from about mid-February through April so the plants bloom in late spring to early summer before the harshest July-August heat, and you can add a second sowing in late summer to early autumn (around late August to September) for autumn flowering as temperatures ease. In warmer Upper Egypt (such as Aswan and Luxor), shift sowing earlier to roughly February-March so flowering finishes before peak heat, and avoid mid-summer sowing there. Sow the seeds about 2.5 cm deep, using around 1-2 cm for smaller varieties and up to about 2.5-5 cm for larger seeds in light soil. Choose a full-sun spot getting at least 6 to 8 hours of direct sunlight a day, with well-drained soil at a mildly acidic to neutral or slightly alkaline pH of roughly 6.0-7.5. Under good conditions seeds germinate within about 7 to 10 days, with optimal soil temperature for germination around 21-24 C. Once seedlings emerge, thin them to the right spacing: about 15 cm apart for small to medium varieties (around 0.6-1.5 m tall), at least 30 cm for tall types, about 60 cm for giant kinds and about 45-60 cm for branching cultivars, with rows about 60-90 cm apart. Sunflowers resent root disturbance, so direct-sowing suits Egypt's dry, sunny springs; if you start indoors, use biodegradable pots, transplant carefully by removing any container part above the soil line, and harden off the young plants first.

Fertilizing

Grow in moderately fertile, humus-rich soil enriched with organic matter such as composted manure. Apply a slow-release all-purpose fertilizer once the plants have several true leaves, after the second set of leaves appears. Feed only sparingly, because excessive nitrogen causes overly vigorous growth, abnormal flower shapes and weak stems that break, and for larger plantings a split nitrogen application, half at planting and half later, works well. For container-grown or purely ornamental plants, a potassium-rich high-potash tomato-type fertilizer applied according to its pack instructions helps support strong flowering.

Care

Sunflowers need roughly 2.5 cm of water per week as a baseline, but Egypt's heat raises that demand well above the temperate level, so water consistently and generously. Water regularly and generously during early growth and around the flowering period and never let tall types dry out; once established, water deeply but infrequently to encourage deep rooting, while container plants may need daily watering in hot weather. Tall varieties also benefit from wind support, since the Delta and desert margins can be windy. Watch for pests: birds and deer feed on seeds and plants, insect pests include aphids, stink bugs, leaf-footed bugs and caterpillars, and young seedlings are very vulnerable to slugs and snails. Sunflowers have relatively few serious disease problems, though fungal issues such as Alternaria and Phoma leaf spot, rust, white mould, Rhizopus head rot, and downy and powdery mildew can appear. Plants typically reach maturity in about 85 to 95 days from sowing, flowering from mid-summer into autumn depending on variety and sowing date. If you want to save seed, it is ready when the back of the seed head turns from green to yellow then brown and the back petals drop.