How to grow Clerodendrum trichotomum

Clerodendrum trichotomum grow and care – shrub‎ of the genus Clerodendrum also known as Harlequin glorybower or Peanut butter tree, Clerodendrum trichotomum perennial evergreen plant, used as ornamental plant as hedge plant, can grow in temperate, mediterranean or subtropical climate and growing in hardiness zone 7-10.

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Leaves color green and can be green with yellow (variegate) in ovate shape.

Clerodendrum trichotomum flower

Flower color white in star shape after this the outer part become red, pink or purple in star with fruit in ball shape in the middle light a pearl in black shape.

Clerodendrum trichotomum for sale – Seeds or Plants to Buy

How to grow Clerodendrum trichotomum growing and care:

Rich soil, well-drained soil, trellising or support

How to care:
Add fertilizer and prune once a year, put mulch to keep soil moist

What is the best way to start growing?
Plant / Seed / Vegetative reproduction – propagating by cutting better to start in the early spring or with temperature of 21-25C (70-77F), requirements: moist soil, high humidity, peat soil, hormone for root growth, highly recommend to use green house (or small plastic box with holes) it will take few weeks for the first root

Is it necessary to graft or use vegetative reproduction?
No, but it’s not hard to start by cutting and also not hard to start by seeds

Difficulties or problems when growing:
?

Planting season:
Spring to summer in hardiness zone 10b, spring to autumn in hardiness zone 11, all year in hardiness zone 12+

How to plant:
Planting in bigger hole and put organic matter, chopped dead leaves and humus, put the plant and cover it lightly and keep it moist for few weeks until the plant establish

Pests and diseases:
Aphids, spider mites, mealy bugs

Pruning season:
After the flowers better to prune but possible to cut in the autumn to early winter (depend when the plant bloom)

How to prune:
Mostly for design, dead parts and week branches

Size of the plant:
2-6m, 6-20 feet

Growth speed in optimal condition:
Fast growing / Medium growing

Water requirement:
Average amount of water / Big amount of water

Light conditions in optimal condition for growing:
Full sun / Half shade

Is it possible to grow indoor as houseplant?
No

Growing is also possible in a planter /flowerpot / containers:
Yes, when growing in containers need to choose container that 100-200% bigger than the roots ball or possible to grow it in small but cut the roots when planting, use potting mix or peat soil with perlite, but after few years drainage of the soil not function the same so need to change it to new soil, when growing in container need to add organic matter and fertilizer at least once a year.

Blooming information

Bloom season?
Spring / Summer

General information about the flower:
White star shape

Ornamental Fruits

Fruit harvest season:
Summer / Autumn

General information about the flower:
Ball shape like pearl and in bright shiny dark blue, green, yellow and the outer part in purple, red or pink in star shape

How to grow Clerodendrum trichotomum from seeds

Sowing requirement:
peat soil with vermiculite possible in other soils, take care that the soil will be well ventilated (better result), sunny location, high humidity, temperature of 21-25C (70-77F)

Saving seeds until sowing:
Dry and dark location, keep it room temperature

Sowing season:
Spring will be better for the tree but possible in summer, and in hardiness zone 12+ possible all year

How to plant:
Plant in soil that will keep the water and don’t let it dry, full sun

Planting spacing:
Better in different pots – because need to graft it after and some won’t establish, 2*1m (6*3 feet)

Depth of Sowing:
1cm (0.5 inch)

Conditions for seeds germinate:
Moist soil, sunny location, water regularly and don’t let it dry

Watering requires for Seeds:
Average amount of water

Germination time:
2-4 weeks

Condition of seedling:
Sunny location, humidity and moist soil

Scientific name:

Clerodendrum trichotomum

How to grow Clerodendrum trichotomum

Clerodendrum trichotomum plant care

Growing Clerodendrum trichotomum plant

Clerodendrum trichotomum

Clerodendrum trichotomum flowers

Categories

Blooming Seasons
  • Autumn flowers
  • Summer flowers
Flower colors
  • Blue flower
  • Green flower
  • Pink flower
  • Purple flower
  • Red flower
  • Yellow flower
Climate
  • Mediterranean Climate
  • Subtropics Climate
  • Temperate Climate
Leaf color
  • Yellow leaf
Ornamental parts
  • Ornamental flower
  • Ornamental fruit
  • Ornamental leaves
  • Ornamental plant
Plant growing speed
  • Average growing plants
  • Fast growing plants
Plant life-form
  • Evergreen
  • Perennial plant
  • Shrub
Plant Uses
  • Colored leaves
  • Hedging plants
  • Ornamental plants
Planting Season
  • Autumn Planting
  • Spring Planting
  • Summer planting
Plants sun exposure
  • Full sun Plants
  • Part shade Plants
Watering plants
  • Big amount of water
  • Regularly water
Hardiness zone
  • Hardiness zone 10
  • Hardiness zone 7
  • Hardiness zone 8
  • Hardiness zone 9

Growing in Pots, Balconies & Indoors

Clerodendrum trichotomum (harlequin glorybower) ultimately makes a small tree of 2-6 m, so it is really too large for a pot in the long run – and the grower does not rate it as a houseplant either. It can be container-grown while young or kept dwarfed by regular root and top pruning on a patio.

Quick Details

  • Container Size: The largest pot you can manage (100-200% larger than the root ball); expect to pot on or root-prune as it grows
  • Indoor Suitability: Not a houseplant, and too large for a room long-term
  • Best Spot: Full sun to half shade, outdoors
  • Soil & Drainage: Potting mix or peat/coir with perlite; refresh as drainage declines
  • Watering in Pots: Average to generous, with free drainage – big leaves lose a lot of water

Indoors & On the Windowsill

  • Not a houseplant: The grower marks it unsuitable indoors, and at 2-6 m it is far too big for a room.
  • Deciduous habit: It drops its leaves and rests over winter – a hardy small tree rather than an evergreen houseplant.

On a Balcony or Patio

  • A patio tree while young: Grow it in a large tub on a sunny patio, staked against wind; it works as a container plant mainly when young or kept dwarfed.
  • Weight & runoff: A big tub of moist soil is heavy and drains a lot of water – stand it where runoff and weight are not a problem.

Choosing the Pot, Soil & Long-Term Care

  • Pot & drainage: The largest practical pot (100-200% larger than the root ball) with strong drainage holes and no standing saucer; or plant smaller and root-prune when you do.
  • Potting mix: Potting mix or peat/coir with perlite; replace the soil after a few years as drainage declines.
  • Feeding: Organic matter and fertiliser at least once a year (the grower’s advice).
  • Repotting & pruning: Pot on or root-prune and hard-prune the top every year or two to hold it to a manageable size.

Bloom & Flower Guide

Quick Details

  • Bloom Season: Spring into summer
  • Flower Appearance: Fragrant white star-shaped flowers, each backed by a pink-to-maroon calyx
  • Edibility: Not eaten — an ornamental, fragrant shrub

Detailed Blooming Overview

Clerodendrum trichotomum (harlequin glorybower) is a shrub prized for its sweetly scented summer bloom. The white flowers open in spring and summer in temperate, Mediterranean and subtropical gardens across roughly zones 7-10, and their fragrance carries well on warm air.

Flower Characteristics

  • White, star-shaped flowers with a strong, sweet scent.
  • Each bloom sits in a colored calyx that deepens from pink toward red and maroon.
  • Carried in loose clusters and much visited by butterflies and bees.

Bloom Care & Thinning

  • Position: A sunny, sheltered spot brings out the best flowering and fragrance.
  • Pruning: Tidy the shrub after bloom to keep its shape; it flowers on the season’s growth.
  • Pollination: The fragrant flowers attract butterflies and bees.