Picture by: Pablesku / Shutterstock.
Sunflowers are iconic, easy-to-grow crops appreciated by gardeners in each state. Thought of considered one of many most interesting flowers to develop, Helianthus thrive in full photograph voltaic and aren’t choosy about soil. You’re more than likely most acutely aware of the huge varieties that develop very tall and have outsized yellow flowers. Nonetheless there are many utterly differing types of sunflowers to seek out.
On this web internet web page: Fundamentals | Rising Choices | Care and Repairs | Varieties | Design Concepts | Continually Requested Questions | Harvest Sunflower Seeds
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BASICS
Botanical title:
Helianthus spp.
Hardiness Zones:
Usually grown as annuals; perennial varieties 4-8 relying on cultivar
Peak:
Varies; giant varieties as loads as 16 ft tall, dwarf varieties 1 to 4 ft tall
Publicity:
Full photograph voltaic, 6+ hours per day
When do sunflowers bloom?
Annual sunflowers bloom all by summer time season and into autumn. Sow new crops each few weeks and as well as you’ll get pleasure from regular flowers till the primary frost. Perennial sunflowers bloom for a interval of 8-12 weeks with some starting as early as July and others ending as late as October.
GROWING SUNFLOWERS
When to plant:
For annual sunflowers (Helianthus annuus), sow seeds outdoors after the specter of frost has handed. When you’ve got a brief rising season they’re usually began indoors. Perennial sunflowers should be planted in spring or fall
Soil:
Any; clay, sandy, silt or loam.
Spacing:
For large sunflowers, or these grown for seed manufacturing, sow seeds 2 to three ft aside. For smaller annual varieties regular for lower flower gardens, chances are high you may sow seeds about 6 inches aside.
SUNFLOWER CARE
Watering:
As shortly as established, they are going to tolerate some drought. Nonetheless, all through the durations ahead of, all by and after flowering, they carry out finest with deep, widespread watering.
Fertilizing:
Usually, they won’t want fertilizer. Nonetheless, in case your soil could be very poor it’s best to take advantage of a slow-release granular fertilizer to encourage better flowers. Watch out – an excessive amount of nitrogen can inhibit flowering.
Staking:
Sunflowers that develop over 3 ft tall or have giant, heavy flower heads are inclined to flopping and even breaking below the stress of summer time season winds and rain. Loosely be a part of your plant’s branches to stakes with supplies or twine to stop this draw back. Sunflowers grown from seed sown immediately all through the yard might have well-established roots and stronger stems and be loads a lot much less liable to fall.
To further encourage proper root enchancment, present well-draining, organically-rich soil, and quite a lot of area between crops. And don’t overlook to water deeply in order that the roots will develop down fairly than out.
SUNFLOWER VARIETIES
Picture by: Daniele Value / Dreamstime.
GIANT
Peak: 9 to 16 ft tall
Bloom dimension: 10 to 14+ inches all by
These annual crops boast giant flowers, typically measuring bigger than a foot all by. They make a superb present or backdrop and attraction to all forms of pollinators. Some varieties have edible seeds. Most want staking to stop them from falling over all through the wind or rain.
Develop these:
- H. annual ‘American Large’
- H. annual ‘Russian Mammoth’
- H. annual ‘Mammoth Gray Stripe’
Suncredible® Yellow sunflower (Helianthus hybrid). Picture by: Confirmed Winners.
DWARF
Peak: 1 to 4 ft tall
Bloom dimension: 2 to 10 inches all by
Dwarf sunflowers are good for containers or small gardens. Many dwarf varieties are branching and provide varied blooms per plant. Some are double-flowered, some are bicolored, and a few are pollenless. Dwarf sunflowers are the correct dimension for chopping and utilizing in preparations.
Develop these:
- Suncredible® Yellow (Helianthus hybrid) — Purchase from Confirmed Winners
- H. annual ‘Image voltaic Flash’
- H. annual ‘Suntastic Yellow’
Helianthus annuus ‘Teddy Bear’. Picture by: Diana Cochran Johnson / Shutterstock.
DOUBLE
Peak: 2 to six ft tall
Bloom dimension: 4 to eight inches all by
Acknowledged for his or her fuzzy, fluffy, or clear texture, double sunflowers are consideration grabbers. Accessible in semi-double or fully-double kinds, their flowers last better than single-bloom varieties and make nice lower flowers. Many are pollenless or have minimal pollen.
Develop these:
- H. annual ‘Teddy Bear’
- H. annual ‘Greenburst’
Helianthus salicifolius. Picture by: Susan A. Roth.
PERENNIAL
Zones: 4-9
Peak: 1 to 10 ft tall
Bloom dimension: 2 to five inches all by
Perennial sunflowers will come as soon as extra year-after-year. They’re extremely efficient crops that current 8-12 weeks of flowers. Reasonably than sending up an enormous flower head, like most of the annual varieties, these sunflowers form clumps with many smaller flowers.
Develop these:
- Helianthus ‘Lemon Queen’
- Helianthus xmultiflorus ‘Capenoch Star’
- H. salicifolius ‘First Delicate’
Helianthus annuus ‘Ring of Fireside’. Picture courtesy: All-America Selections.
SPECIALTY
Peak: 4 to 7 ft tall
Bloom dimension: 4 to eight inches all by
Many gardeners are shocked to look out that sunflowers could be current in further colours than the important shiny yellow. There are varieties with deep purple flowers, others that present of gorgeous combos of colour and nonetheless others which is probably white.
Develop these:
- Purple: H. annual ‘Velvet Queen’ or ‘Chianti’
- Bicolor: H. annual ‘Ring of Fireside’ (pictured) or ‘Sweet Mountain’
- White: H. annual ‘Coconut Ice’ or ‘Italian White’
- Blended: H. annual ‘Autumn Magnificence’ or ‘Music Self-discipline’
FALSE SUNFLOWERS
‘Tuscan Picture voltaic’ Heliopsis helianthoides Picture by: Confirmed Winners.
False sunflowers resemble smaller variations of true sunflowers, nonetheless have raised, cone-shaped facilities. The petals stick with the flower as a substitute of withering and falling off, as sunflowers do. False sunflowers are perennials and may be merely grown in zones 3-9.
‘TUSCAN SUN’ (pictured) — Purchase now from Confirmed Winners
Measurement: 2 to three ft tall, as loads as 2 ft in depth
‘TUSCAN GOLD’ — Purchase now from Confirmed Winners./>
Measurement: 24 to 32 inches tall, as loads as 2 ft in depth
DESIGN IDEAS
- Develop them as a joyful addition to the late-summer yard. They provide the impression of being good behind the border or alongside a fence or wall.
- Add them to your chopping yard and use them in preparations. Search for sunflowers which is probably pollenless and have sturdy stems.
- Use them to draw birds, bees and butterflies-they are good for pollinators whereas in bloom, and their seed heads may be dried and set out for the birds all by winter.
- Plant them as a companion plant in vegetable gardens. The sunflower is the fourth sister that Native Folks used to accompany corn, beans and squash.
- Develop sunflowers to encourage, delight and educate kids. Children are amazed at how shortly they develop and the way in which wherein huge the huge varieties flip into.
FREQUENTLY ASKED QUESTIONS
Are sunflowers toxic to cats or canines?
In case your pets eat your sunflowers or their seeds, don’t fear due to they’re non-toxic. Likelihood is you may safely develop them in your yard and use them in preparations indoors. See additional protected plant alternatives: 20 Frequent Crops Protected for Cats & Canine.
Do sunflowers regulate to the photograph voltaic?
Youthful sunflowers face east to take in daylight all through the morning and observe the photograph voltaic because of it strikes westward all by the use of the day. This course of known as heliotropism. As shortly as sunflowers have reached maturity, they cease following the photograph voltaic and face east from then on.
Are sunflowers weeds?
Sunflowers are acknowledged for popping up on their very private (correctly, really with the assistance of birds). For some gardeners they’re a treasured shock, nonetheless to others they’re a irritating weed. For those who occur to happen to don’t need sunflowers in your yard, merely pull them up, guaranteeing to get the roots.
HARVEST YOUR OWN SUNFLOWER SEEDS
For those who occur to need to harvest sunflower seeds to snack on (or to feed the birds with later), plant better sorts of Helianthus annuus (annual sunflower) since they’ve an important seeds. Good alternatives are ‘Russian Mammoth’, ‘Sunzilla’, and ‘Heirloom Titan’, typically towering bigger than 10 ft tall with seed heads a foot or additional all by. (Phrase: To ensure that pollen-free Helianthus annuus varieties to form seeds for wildlife, you furthermore ought to plant kinds of sunflowers that produce pollen.)
Harvesting your non-public seeds is straightforward:
- When flower heads begin to dry and alter to face the underside and seeds are plump and ripe, lower off flower heads with a 2-foot part of the stem related.
- Tie cheesecloth over the heads and cling them upside-down in a storage or yard shed to complete drying.
For those who occur to happen to’re merely planning on letting birds feast on the seeds, chances are high you may go away the seed heads on the crops for the birds to eat. An alternative choice is to chop the drying ripe seed heads and cling them the improper means up on a fence to provide birds easier entry.
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