XANTHORHIZA simplicissima

Commonly known as Yellowroot

Suckering, clump-forming plant with tiny purple flowers and purplish-bronze foliage in autumn
Further Reading....
  • Deciduous
    Leaves to 30cm (12in) long each with 3-5 deeply lobed, irregularly toothed leaflets
  • Purple
    Shades of purple/mauve/lilac/violet
  • Height
    60cm (24in)
  • Spread
    1.5m (5ft)
  • Dwarf shrub
    Typically only grows to a maximum of one or two feet in height but there will be some exceptions.
    Thicket-forming shrub with erect shoots and leaves clustered at the shoot tips. Produces flowers in racemes or panicles to 10cm (4in) long
  • Ground cover
    These plants are typically low growing and spread quickly to inhibit weed growth on areas of bare soil
  • Hardy - very cold winter
    Hardy in all of UK and northern Europe. Plant can possibly withstand temperatures down to -20°C (-4°F)
  • Full shade
  • Partial shade

XANTHORHIZA simplicissima

 
Estimated availability autumn 2024 Any time SEPT-DEC - Not yet confirmed. Could be any time between September and December.
£25.00 each 
Delivery Information Estimated availability autumn 2024 Any time SEPT-DEC

 

  • Additional Features
    Good to know
    Excellent ground cover for shade
    Pests & Diseases
    None
    Place of origin
    Eastern USA (Pennsylvania to Florida)
  • Garden Location/Conditions
    Border
    Suitable for a damp, shady border
  • Hardiness
    Fully hardy
  • Leaf form
    Pinnate
    (see photos above)
  • Leaf margin
    Lobed
    (see photos above)
  • Leaf shape
    Ovate
    (see photos above)
  • Pruning group
    Pruning group 1
    Suitable for: Deciduous and evergreen trees, and some deciduous shrubs.
    Pruning: Minimal pruning required. Prune wayward or crossing branches to maintain a healthy framework.
    When: When dormant in the late winter/early spring. Some in the summer/autumn to prevent bleeding of sap.

    Pruning group 2
    Suitable for: Deciduous shrubs and trees that flower in Spring or early Summer on previous year's growth, including plants that produce new growth at or near ground level.
    Pruning: Prune flowered shoots to strong buds. Cut back approximately 1/4 of old shoots to the base to promote replacement growth.
    When: Annually, after flowering.

  • Seasonal Interest
    Autumn
    Spring
  • Soil Conditions
    Fertile moist well-drained soil
    Moderately fertile. Moist but not waterlogged
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Xanthorhiza - Growing Guide
60cm (24in)
Dwarf Shrub - guide for size not form Watering Can
  1.5m (5ft)
 

Useful extras...

Fertilisers & Feeds - Vitax
Q4 Pelleted Fertiliser
A useful fertiliser suitable for use on a wide variety of plants. Q4 provides all the nutrients and trace elements essential for vigorous growth, abundant flowering and ripening of fruit.
3 options from £6.00

Fertilisers & Feeds - Empathy
Afterplant - Grow Your Own
AFTER PLANT GROW YOUR OWN seaweed is ready to use liquid concentrate that was specially formulated be used on all edible plants.
Only £8.00

Fertilisers & Feeds - Empathy
Afterplant - Tomatoes
AFTER PLANT TOMATO FEED Liquid Concentrate with Bio stimulant is a high potash liquid concentrate containing seaweed extract, plant derived amino acids and other nutrients specifically formulated to benefit tomatoes and greenhouse plants.
Only £8.00

Fertilisers & Feeds - Empathy
Rootgrow mycorrhizal fungi
Recommended by the RHS. Contains Rootgrow™ mycorrhizal fungi. Suitable for all trees and shrubs (except rhododendrons, azaleas, heathers, cranberries and blueberries)
3 options from £3.00

Fertilisers & Feeds - Empathy
Rootgrow Ericoid mycorrhizal fungi
This specially adapted Rootgrow™ mycorrhizal fungi will boost the growth of acid-loving plants like rhododendrons, azaleas, heathers and blueberries. It contains ericoid and arbuscular mycorrhizal fungi, which are found in poor acidic soils where ericaceous plants naturally grow.
Only £7.50

Fertilisers & Feeds - Empathy
All-purpose Seaweed Stimulant
All-purpose organic concentrated seaweed feed that is a ready to use, derived from sustainable harvested kelp, that can be used on all outdoor and indoor plants, except acid loving plants. Perfect used in conjunction with Rootgrow™.
Only £7.50

Share this page

Twitter Facebook Digg