Solidago rugosa, commonly called the wrinkleleaf goldenrod or rough-stemmed goldenrod, is a species of flowering plant in the family Asteraceae. It is native to North America, where it is widespread across eastern and central Canada (from Newfoundland to Ontario) and the eastern and central United States (Maine west as far as Wisconsin and Iowa, south to Florida and Texas). It is usually found in wet to mesic habitats.
The wrinkleleaf goldenrod is an ornamental garden plant known for its distinctive narrow, lance-shaped leaves that have a wrinkled texture. Each individual plant can produce up to 50 stems, with each stem bearing 50 to 1500 yellow flower heads. This abundance of blossoms creates the impression of a large, golden sea of flowers. Its vibrant yellow blooms and uniquely textured leaves give the plant its name: wrinkleleaf goldenrod.
Wrinkleleaf goldenrod is fairly resistant to disease and typically does not readily develop illnesses. Still, it can be vulnerable to pests and pathogens present in its surroundings. Such infections are usually mild. In terms of care, the plant requires moderate maintenance. Regular pruning is needed to maintain an attractive appearance and healthy growth. Fertilizing can also help encourage flowering. Wrinkleleaf goldenrod is suitable for people with outdoor spaces like a garden or patio and does not require extensive care experience. It may demand more attention when grown indoors.
How to keep Solidago Rugosa.
Light
Wrinkleleaf goldenrod requires abundant sunlight for healthy growth. Native to habitats that commonly have unobstructed sun, it is suited to sites where ample light reaches the plant. Still, it performs well under moderate sunlight. Both overexposure and insufficient light can impair its robust growth and vibrancy.
Water
Wrinkleleaf goldenrod is well-suited to environments with varying moisture levels. It prefers moderate hydration and consistent moisture without becoming waterlogged. For best results, water the plant once every 1-2 weeks. This plant thrives in meadows and open woods, benefits from rainwater, and adapts well to different climate zones.
Temperature
Wrinkleleaf goldenrod prefers temperatures between 41 and 95℉ (5 and 35℃) and is commonly found in temperate regions. In summer, keeping the temperature near 68 to 77℉ (20 to 25℃) is recommended, while in winter it can be reduced to 50 to 59℉ (10 to 15℃).
Fertilizer
One fertilizer application in spring is generally adequate for Wrinkleleaf goldenrod, though repeated feedings can maximize its growth. Fertilize about once every month to a month and a half. Feeding improves the leaves' appearance and function, helping maintain uniform color and a healthy texture. It also encourages root development and enhances nutrient uptake for long-term plant health.
Pruning
Wrinkleleaf goldenrod benefits greatly from annual pruning, done between early and late spring. This practice encourages healthy growth and results in vibrant yellow flowers. The pruning process involves removing dead stems and thinning out crowded areas, which improves air circulation, prevents disease, and enhances both the plant's longevity and aesthetics.
Pot & Repot
For wrinkleleaf goldenrod to thrive in pots, it needs excellent drainage. This ensures proper water management and prevents root rot.
Botanical profile.
- Plant Type
- Herb
- Life Cycle
- Perennial
- Genus
- Solidago
- Family
- Asteraceae
- Hardiness Zone
- 5-9
- Mature Height
- 0.91 m to 1.83 m
- Mature Spread
- 91 cm
- Leaf Color
- Green
- Leaf Type
- Deciduous
- Flower Color
- Gold, Yellow
- Flower Size
- 2.54 cm
- Bloom Time
- Mid summer, Late summer
- Planting Time
- Spring
- Harvest Time
- Fall
- Native Area
- North America
Other names.
Reader questions.
When Should I Water My Wrinkleleaf Goldenrod?
To determine the right time to water your wrinkleleaf goldenrod, check for signs like soil dryness by pressing your finger about an inch into the soil. If it feels dry, the plant needs watering. Leaf wilt, slow growth, and color changes in the leaves are also indicators that your wrinkleleaf goldenrod requires water. However, it's critical to avoid overwatering to prevent root rot, while underwatering can lead to wilt and decreased growth. Paying attention to these signs will help ensure the successful cultivation of your wrinkleleaf goldenrod.
Why should I use plant food on my Wrinkleleaf goldenrod plant?
The main structure of the Wrinkleleaf goldenrod is made up of its leaves. Fertilization is an important way to make sure the leaves of your Wrinkleleaf goldenrod look great and function properly. Proper fertilization will maintain consistent color and healthy texture in the leaves. It also supports root growth and maintenance, helping the plant absorb soil nutrients better in the future.
What are the sun requirements for growing Wrinkleleaf goldenrod?
Wrinkleleaf goldenrod requires significant sunlight exposure for healthy growth, thriving in full sun conditions which entail more than 6 hours of direct sunlight daily. It can also perform well under partial sun, defined as about 3-6 hours of sunlight a day. Monitoring the movement of sunlight through your garden helps in selecting the ideal location for planting, ensuring a balanced environment of light and shade for optimal plant health.
What is the optimal temperature range for Wrinkleleaf goldenrod?
Wrinkleleaf goldenrod thrives in a temperature range of 41 to 95°F (5 to 35°C), making it suitable for temperate environments. During summer, it's best to maintain the temperature between 68 to 77°F (20 to 25°C). In the cooler months of winter, temperatures can be adjusted to a cooler 50 to 59°F (10 to 15°C). The plant has a strong resistance to cold, and special frost protection measures are generally not required, although it is advisable to protect the plant if temperatures are expected to drop below -25°C by covering it with materials such as soil or straw. Prior to the first freeze in autumn, abundant watering is recommended so that the soil remains moist and helps prevent drought and water scarcity for the plant during winter and early spring.
How Should I Water My Wrinkleleaf Goldenrod?
Wrinkleleaf goldenrod thrives best in well-drained, loamy soil and should be watered using a gentle shower watering can to replicate rain and avoid waterlogging. Ensure you're using a nozzle with adjustable patterns for control and a moisture meter to avoid over-watering. It's essential to focus watering at the base to hydrate the roots effectively and prevent foliar diseases. Deep watering is recommended to reach the plant's deepest roots without causing oversaturation. For a thorough watering, you might occasionally use the bottom watering method to ensure even moisture distribution.
When should I fertilize my Wrinkleleaf goldenrod?
If you grow your Wrinkleleaf goldenrod outdoors each year, it will send out new growth in early spring. This is when you should start fertilizing. Usually, one application of fertilizer is enough. But if you want to maximize the growth, you can fertilize multiple times throughout spring and early summer. In this case, feed your Wrinkleleaf goldenrod once every month to a month and a half.
What are the essentials for Wrinkleleaf goldenrod's growth?
Originating from environments with ample unobstructed sunlight, Wrinkleleaf goldenrod prospers in areas receiving substantial sunlight but can also adapt to moderate light conditions. Excessive sunlight or insufficient light exposure can negatively impact its growth and color vibrancy. For optimal growth indoors, especially in low natural light conditions or during winter, artificial lighting can be a solution. LED lights are recommended due to their customizability for different plant needs, with full sun plants requiring 30-50W/sq ft, partial sun plants 20-30W/sq ft, and full shade plants 10-20W/sq ft of artificial light. The artificial light should be placed 12-36 inches above the plant, ensuring 8-12 hours of light per day to mimic natural daylight.
How does low temperature affect Wrinkleleaf goldenrod and what are the solutions?
Wrinkleleaf goldenrod is cold-tolerant, flourishing best when temperatures stay above 5°C and should remain above -20°C during winter. If temperatures fall below -25°C, the plant may not show immediate adverse effects during winter, but there could be a noticeable decrease in sprouting or a complete lack of sprouting come spring. In such cases, it's advisable to remove any parts of the plant that have failed to sprout in spring as part of the solution to this issue.
How Much Water Does Wrinkleleaf Goldenrod Really Need?
The optimal watering amount for wrinkleleaf goldenrod varies based on factors like pot size and plant size but generally, it prefers moderate soil moisture. For a mature plant in a medium-sized pot, 1.5 to 2 liters per session is ideal. Properly hydrated plants display healthy, vibrant leaves and abundant flowers. To avoid risks such as root rot from overwatering or stunted growth from underwatering, use well-draining soil and allow the soil to slightly dry between watering sessions, adjusting more frequently during hot, dry periods.
When is the wrong time to fertilize my Wrinkleleaf goldenrod?
During the late fall and winter, your Wrinkleleaf goldenrod goes into a dormant phase where it doesn't produce new growth. It's best to avoid fertilizing it during this time. If you choose to fertilize in the spring and summer, gradually reduce the amount as summer approaches since the growth rate of the goldenrod slows down. It's not a good idea to fertilize when it's unusually hot or when the soil is extremely dry, as this can cause stress and premature death for the goldenrod.
What are the symptoms of inadequate lighting for Wrinkleleaf goldenrod?
Wrinkleleaf goldenrod shows several symptoms when exposed to insufficient light, including the development of smaller new leaves, elongated spaces between leaves or stems leading to sparse and possibly weak growth, premature leaf drop to conserve resources, halted growth as the plant enters a survival state, paler new leaves indicating a deficiency in chlorophyll and nutrients, and various responses to excessive light such as chlorosis, sunscald, leaf curling to minimize water loss, wilting from rapid water loss through transpiration, and leaf scorching.
What should be done if Wrinkleleaf goldenrod experiences high temperatures?
During the summer months, it is crucial to keep Wrinkleleaf goldenrod's temperature below 35°C. Exposure to temperatures above 38°C can cause the leaves to lighten in color, become prone to curling, susceptible to sunburn, and in severe cases, might lead to the entire plant wilting and drying out. To mitigate these effects, trim away any sunburned and dried parts of the plant. The plant should also be moved to a location with ample shade from the midday and afternoon sun, or a shade cloth can be used to create necessary shade. To keep the soil moist and further assist the plant, water it during the cooler times of morning and evening.
