Symphyotrichum racemosum (formerly Aster racemosus) is a species of flowering plant native to parts of the United States and introduced in Canada. It is known as smooth white oldfield aster and small white aster. It is a perennial, herbaceous plant in the family Asteraceae. It is a late-summer and fall blooming flower.
Smooth white oldfield aster has strong disease resistance and is generally not susceptible to illnesses. However, it can be affected by pests and diseases present in its environment. These problems are typically minor. For care, this plant requires moderate maintenance. It should be pruned regularly to maintain an attractive appearance and healthy growth. Fertilizing can also help encourage flowering. Smooth white oldfield aster is suitable for anyone with outdoor space, such as a garden or patio, and does not demand extensive care experience. It may need more attention when grown indoors.
How to keep Symphyotrichum Racemosum.
Light
Smooth white oldfield aster is a perennial herbaceous plant that prefers sunny conditions and originates from open habitats, commonly growing in meadows and grasslands. It favors full sun but can also tolerate partial sun.
Water
The smooth white oldfield aster naturally grows in woodland-like environments where moderate moisture is present. It thrives when the soil remains consistently moist, requiring weekly watering. As a temperate outdoor plant, it benefits from rainfall that aligns with its growth cycle, ensuring it stays hydrated during essential development periods.
Temperature
Smooth white oldfield aster can tolerate a wide range of temperatures, though its distribution may still be restricted by various combinations of moisture and heat. It grows best in warm summer conditions with sufficient rainfall or supplemental watering. Extended stretches of cloudy, rainy weather or sustained high temperatures can raise the chance that Smooth white oldfield aster will die. During winter, adequate protection from cold can increase the plant's survival rate.
Fertilizer
The best time to fertilize a Smooth white oldfield aster is in early spring, as it is coming out of dormancy and starting active growth. Fertilization supplies essential nutrients for healthy growth. While Smooth white oldfield aster has relatively low fertilizer requirements, fertilizing annually can improve its survival and encourage better, longer-lasting flowers.
Pruning
The smooth white oldfield aster is known for its smooth, white flowers and bushy growth. To ensure the plant’s health and shape while preventing disease, prune it between early and late spring. Focus on removing dead stems, reducing overcrowding, and cutting back old growth. For optimal results, always use clean, sharp tools during pruning.
Botanical profile.
- Plant Type
- Herb
- Life Cycle
- Perennial
- Genus
- Symphyotrichum
- Family
- Asteraceae
- Hardiness Zone
- 3-9
- Mature Height
- 0.61 m to 1.52 m
- Mature Spread
- 30 cm to 61 cm
- Leaf Color
- Green, Dark Green
- Leaf Type
- Deciduous
- Flower Color
- White
- Flower Size
- 1.02 cm to 2.03 cm
- Bloom Time
- Late summer, Early fall, Mid fall
- Planting Time
- Spring, Summer, Autumn
- Harvest Time
- Fall
Other names.
