The best time to start harvesting Rudbeckia hirta is typically in late summer or early fall, usually between August and October.
black-eyed Susan
Rudbeckia hirta
Also Known As - gloriosa daisyBlack-eyed Susans (Rudbeckia hirta) are perennial, flowering plants native to North America. These showy, daisy-like flowers have eye-catching yellow petals surrounding a dark center. Their color ranges from yellow to amber to golden-brown. They attract a wide variety of birds, butterflies, and other pollinators, making them a must-have in any wildflower garden. Black-eyed Susans thrive in full sunlight and can tolerate a wide range of soil types. They are low-maintenance and can spread quickly by self-seeding, giving any garden a burst of attractive color.
Cycle:
Herbaceous Perennial
Watering:
Minimum
Propagation:
Division
Hardiness Zone:
3 - 7
Flowers:
Yellow to orange-yellow rays and dark brown centers Flowers
Sun:
Full sun
Soil:
Sandy Loamy Clay Humus Rocky
Fruits:
red,yellow,orange,brown Fruits In Autumn Ready In Fall
Leaf:
Yes
Leaf Color:
green
Growth Rate:
High
Maintenance:
Low
Drought Tolerant:
Yes
Salt Tolerant:
Yes
Care Level:
Medium
watering
Black-eyed Susan (Rudbeckia hirta) should be watered when the soil is dry to the touch, once weekly or even less often in cool weather. Do not overwater as this can cause root rot. In hot and dry weather, you may need to water twice a week. When watering, aim for the base of the plant and water deeply to encourage development of a good, deep root system. Avoid getting the foliage wet to help prevent disease.
sunlight
Black-eyed Susan (Rudbeckia hirta) prefers full sun exposure and will thrive in 6 to 8 hours of direct sunlight per day. It grows best when given plenty of sunshine throughout the growing season, which typically begins in the spring and lasts through late fall. To ensure the health and productivity of the plant, it is important for the location to receive at least 6 hours of direct sunlight per day, with more sunlight providing additional vigor and blooms. Avoid planting in areas that are consistently shady, as this will cause the plant to suffer in terms of overall health.
pruning
Black-eyed Susan (Rudbeckia hirta) should be pruned once in early spring, just before active growth begins. This will help promote healthy and strong new growth. Cut off any dead or damaged stems and remove any diseased or pest ridden foliage. Remove any older leaves that have lost their color or are yellowing. Other optional pruning during the growing season includes removing up to 1-third of the stems in late summer or fall to promote new growth and provide air circulation to help prevent disease. Prune off any fading flower heads to encourage the production of new flowers. This type of pruning should not be done until flowers fade.
Season
Fall
Winter
Spring
Summer
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Harvest Fruit
Starts Flowering
Rudbeckia hirta typically starts flowering in late summer, usually in July or August.
Harvest Fruit
The best time to start harvesting Rudbeckia hirta is typically in late summer or early fall, usually between August and October.
Hardiness Map
FAQ
Is Black-Eyed Susan a native plant?
Yes, Black-Eyed Susan is a native plant. It is native to the United States and Canada and is an annual wildflower found in grassy meadows, fields, and along roadsides. It is also known as the yellow ox-eye daisy and is most commonly found in the east side of the U.S.. It has a bright golden-yellow flower head and is one of the most common wildflowers in North America, blooming in the summer months of June to September. Black-Eyed Susan also attracts pollinators such as bees, butterflies, and hummingbirds.
Should Black-Eyed Susan flowers be deadheaded?
Yes, Black-Eyed Susan flowers should be deadheaded in order to keep them looking their best and promote a long blooming period. Deadheading is the process of removing faded flowers and spent seed heads from the plant. Doing this encourages the plant to produce more flowers and prevents it from focusing energy on producing seeds. Deadheading also helps to keep the plant looking bushy and prevents it from becoming leggy.
Are Black-Eyed Susan flowers suitable for cut arrangements?
Yes, Black-Eyed Susan flowers are a suitable choice for cut arrangements. They are a popular choice for providing bright, cheerful colour in gardens, and can be used indoors in floral arrangements. They are an easy to manage, low maintenance option given that they grow quickly without much fuss. The stunning daisy like flowers have a firm yet delicate texture, making them perfect for a wide range of uses. These beautiful and cheerful blooms can be used to brighten up any bouquet or centerpiece.
Do Black-Eyed Susan flowers require a trellis or support?
Black-eyed Susan flowers do not require a trellis or support as they have long, strong stems that can stand up on their own when mature. Furthermore, the strong stems and light flowers of the Black-eyed Susan make them one of the most wind-tolerant varieties of flower. However, if you do choose to support them with a trellis, they will likely need to be tied to the structure as their stems are quite flexible. Additionally, most trellises can help to encourage the tall, upright growth of these flowers.
Is Black-Eyed Susan a good choice for a butterfly garden?
Yes, Black-Eyed Susan (Rudbeckia hirta) is an excellent choice for a butterfly garden. Highly attractive to butterflies and other pollinators, the Black-Eyed Susan provides a food source and a landing pad for them. This perennial's bright yellow-orange flowerheads appear from midsummer into early fall, making for a highly attractive addition to a butterfly garden. The Black-Eyed Susan is low maintenance and requires minimal looking after, meaning it can be enjoyed without any worries of upkeep.
Are Black-Eyed Susan flowers invasive?
No, Black-Eyed Susan flowers are not considered an invasive species. They are native to North America and prefer to grow in full sun and soils with good drainage. They spread naturally by the seeds they drop, but they typically remain in the same area. Furthermore, they are easily managed and usually do not outcompete other native plants in their environment.
Should Black-Eyed Susan flowers be divided regularly?
Yes, Black-Eyed Susan flowers should be divided regularly. This will help to keep the flowers healthy and ensure they reach their full growth potential. By dividing the flowers every three to four years, it will encourage healthier root systems and help protect against overcrowding in the garden or flower bed. It will also keep the flowers looking their best and provide more blooms each year. Additionally, dividing the flowers will help to propagate more plants and create an even healthier garden.
Could Black-Eyed Susan flowers be grown from seeds?
Yes, Black-Eyed Susan flowers can be grown from seeds. Begin by choosing a spot with full sun and loamy soil, and prepare the soil with compost or fertilizer; if the soil structure is not ideal, you can amend it with some organic material. Sow the seeds either in the ground or in a container and cover them lightly with soil or potting mix. Keep them well watered and check for seedlings in one to two weeks. Grow the seedlings to the desired size and allow them to flower, usually in midsummer. This is a great way to create your own Black-Eyed Susan garden.
