Ironweed typically starts flowering in late summer, usually in August or September.
ironweed
Vernonia 'Southern Cross'
Ironweed (Vernonia 'Southern Cross') is a perennial flower native to eastern North America. It is a tall, upright plant, growing up to 5 feet high with large, purple-violet flower heads that appear from August to October. The foliage is deeply cut and lacy and is a great garden addition for its long-lasting colour. Ironweed is a hardy drought-tolerant plant, happy in full or partial shade and does not require much maintenance. When planted in masses, it provides a beautiful backdrop to the garden, while providing nectar for butterflies and other pollinators.
Cycle:
Herbaceous Perennial
Watering:
Minimum
Propagation:
Division,Cutting,Layering Propagation,Seed Propagation,Root Cutting
Hardiness Zone:
4 - 9
Flowers:
Purple Flowers
Sun:
Full sun
Leaf:
Yes
Leaf Color:
red,purple
Growth Rate:
High
Maintenance:
Low
Drought Tolerant:
Yes
Salt Tolerant:
Yes
Care Level:
Medium
watering
Ironweed likes to be watered regularly but infrequently. Water this plant deeply 2 to 3 times a week in warmer months and once a week or less in cooler climates. Provide enough water to moisten the soil and make it damp, but not soggy. Avoid over-watering as this can lead to root rot. Water your Ironweed at the soil level and not at its foliage to avoid leaf spot.
sunlight
The ironweed (Vernonia 'Southern Cross') is a robust, drought-tolerant plant species that thrives in full sun. For optimal growth, ironweed should be given at least 6-8 hours of direct sunlight each day. Ideally, the plant should be placed in an area that gets full sun in the morning followed by some light afternoon shade. Ironweed grows best when temperatures range from 65 to 95 degrees Fahrenheit.
pruning
Ironweed (Vernonia 'Southern Cross') should be pruned in late winter or early spring. Pruning should remove any dead, damaged or diseased stems. Keep pruning cuts to healthy, living tissue, as reducing too much of the living stem can reduce its flowering potential. During pruning, cut the old flower stems down to the ground as flowers are typically produced on new growth. Prune no more than 1-third of the plant's overall height to ensure enough foliage remains for the plant to remain healthy. If the plant has become overgrown, prune it more heavily over 2 to 3 years, rather than all at once.
Season
Fall
Winter
Spring
Summer
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Starts Flowering
Starts Flowering
Ironweed typically starts flowering in late summer, usually in August or September.
