安裝中文字典英文字典辭典工具!
安裝中文字典英文字典辭典工具!
|
- Helianthus - Wikipedia
Helianthus ( ˌhiːliˈænθəs ) [3] is a genus comprising around 70 species of annual and perennial flowering plants in the daisy family Asteraceae commonly known as sunflowers [4][5] Except for three South American species, the species of Helianthus are native to North America and Central America
- 10 Types of Perennial Sunflowers to Grow Year After Year
The annual sunflower (Helianthus annuus) is a classic summer favorite While easy to grow from seed, they must be replanted each year The genus Helianthus also includes several perennial species These are fairly long-blooming, late-season flowers, blooming in late summer through mid-autumn
- Perennial Sunflower Varieties - Gardening Know How
Flowers in the Helianthus genus number about 50 and include annuals, those large, sunny yellow blooms you mostly see in gardens They also include Helianthus perennial sunflower varieties Perennial sunflower plants actually make up the majority of sunflower varieties native to North America
- Helianthus - North Carolina Extension Gardener Plant Toolbox
Plant in the full sun for the most blooms and enjoy the flowers from late summer until the first frost Leave the seed heads standing to provide a late fall and winter food source for birds The giant sunflower H annuus is the plant that provides the seed we snack on and sunflower oil
- Helianthus Plant Growing Care Guide for Gardeners
Plant Characteristics: Helianthus boast large, radiant blooms that turn towards the sun They add a dramatic and joyful touch to gardens, and are also great for attracting birds and pollinators Ideal Growing Conditions: Sunflowers love full sun and a well-draining soil
- How to grow Helianthus (sunflowers) - RHS Gardening
Sunflowers (Helianthus), with their familiar large yellow blooms, are easy and fun to grow, for children and adults alike But why limit yourself to the traditional favourites? There’s a colourful array to choose from, in all sizes, both short-lived annuals and long-lived perennials
- Helianthus annuus (Common Sunflower) - Gardenia
Helianthus annuus (Common Sunflower) is a tall, fast-growing annual with broad, oval to heart-shaped, roughly hairy leaves It produces huge, brilliant flowers in summer, up to 12 in across (30 cm), with yellow petals surrounding a dark chocolate central disk
|
|
|