Rock Steady® Chastetree (Vitex agnus-castus)
You can only choose one Ship Week per order for all plants in order to check out.
How Does Proven Winners® Measure Plant Sizes?
We list our plants by container size, which reflects the amount of soil and root growth each plant has when it ships. Actual plant height and width vary by variety and season, and many plants grow quickly as the weather warms.
To help you understand what to expect, refer to our size guide below. You can also find each plant’s approximate arrival size and mature size on its product page.
How Does Proven Winners® Measure Plant Sizes?
How Does Proven Winners® Measure Plant Sizes?
Plant Height By Container Size
This chart highlights the typical heights for each size category while also showing how container sizes compare, giving you a clear, straightforward way to understand plant size at arrival and choose the best fit for your gardening needs.
This chart shows typical plant heights and compares container sizes, helping you quickly understand arrival size and choose the best fit.
Soil Volume By Container Size
This chart shows the typical soil volume for each container size, listed in both imperial and metrics units for easy comparison.
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Proven Winners® Annuals
Proven Winners® Perennials
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Shrubs
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If you’d like to spend literal months enjoying flowers, Rock Steady™ vitex is meant for you! We trialed it next to other popular options and it bloomed anywhere from 6-16 weeks longer. Since it blooms on new wood, it has to grow its flower buds in spring, but once it starts flowering in late spring it doesn’t stop until fall! Its light purple, candelabra-like blooms attract pollinators and look lovely in a cut flower arrangement. It is very reliable, as it flowers on new wood. So even if it experiences winter dieback in a colder region, it should still pop back up and present flowers. Pop a Rock Steady vitex into your garden for a seasons-long floral show!
- 4-12 feet tall and 4-5 feet wide at maturity
- Hardy in zones 5b-9, be sure to check your USDA zone to ensure success
- Plant in full sun (6+ hours daily)
- Space plants 4-5 feet apart for best results
- Maintains a mounded habit of pale green foliage from spring through frost
- Produces light purple, panicle flowers from spring into fall
- Blooms on new wood
- Great for cut flowers, mixed borders, landscapes
- Attracts bees, butterflies, hummingbirds and resists deer
- Long blooming, heat tolerant, drought tolerant
Care: Fertilize with Proven Winners Continuous Release Plant Food in spring and mid-summer. Prune as needed in spring.
- Shipping Info:
- Enjoy free shipping on orders over $175
- Size at shipping varies by season, plant, and trimming schedules
- Quart shrubs are 5-8" tall at shipment
- 1-Gallon shrubs are 6-24" tall at shipment
- Shrubs shipped Nov-Apr will arrive dormant; shrubs shipped Apr-Oct will arrive green or in bloom
