Pennisetum violaceum grow and care herbaceous of the genus Pennisetum also known as Fountain grass, Pennisetum violaceum perennial evergreen used as ornamental plant can grow in mediterranean, desert, subtropics or temperate climate and growing in hardiness zone 10-12

Pennisetum violaceum Plants, Seeds & Supplies for Sale

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Leaves color green, in linear shape.

Pennisetum violaceum flower

Flower color yellow, purple or pink, the flowers like hair and grow stem in raceme inflorescence.

Pennisetum violaceum for sale – Seeds or Plants to Buy

How to grow Pennisetum violaceum growing and care:

Well-drained soil, prefer rich soil with organic material

How to care:
Add organic matter and fertilize better to fertilize before the blooming season but not must, when the plant young (in case of seeds or late planting) better to protect it in the winter

What is the best way to start growing?
Plant / Seeds / Vegetative Reproduction – daughter plant when the plant full grow better to separate after wet the soil in order to make it easier and to keep the roots as long as possible, in the beginning increase the amount of water for at least two weeks, better to do it with longer until the first leaf that grow.

Is it necessary to use vegetative reproduction?
No, but easier start by daughter plant than start from seeds

Difficulties or problems when growing:
Invasive, aggressive

Recommended planting season?
Spring in hardiness zone 10a, spring to summer in hardiness zone 10b, spring to autumn in hardiness zone 11, all year in hardiness zone 12

Pests and diseases:
Snails, slugs

Pruning season:
All year, better for design in winter

How to prune:
Dead leaves and dead bloom stems, old plants, just for design

Size of the plant:
0.7-1.2 m, 28-48 inches

Growth speed in optimal condition:
Fast growing / Medium growing

Water requirement:
Small amount of water, possible to let it without water for a long period, the plant can grow in regular amount of water and need more water especially in the blooming season but when increase the amount of water need to be good drainage

Light conditions in optimal condition for growing:
Full Sun, can grow in less than half shade well, but then it will have less flowers

Is it possible to grow indoor as houseplant?
No

Growing is also possible in a pot, planter, flowerpot, containers:
Yes, when grow in container possible to start by 5L (1.5 gallon) but it’s for few plants connected together, in order to get impressive and blooming plant need at least 15-20L (4-5 gallons), but in order to get flowers after few years need to check that the roots system not fill all the planter, if it’s full need to reduce that amount of plants and cut the roots or to increase the size of the container, except this need to pull old plants after having flowers, pruning the leaves and roots and reduce the amount of roots in the pots and let new roots to grow, every few years need to check the soil that it’s still viable and if not take care of the soil by washing the old soil and put new, soil better to have potting mix or something similar.

Blooming information

Bloom season:
All year, in cold climate not in the winter

General information about the flower
Yellow, purple or pink flowers like hair and grow stem in raceme inflorescence.

Scientific name:

Pennisetum violaceum

Categories

Blooming Seasons
  • Autumn flowers
  • Spring flowers
  • Summer flowers
  • Winter flowers
Flower colors
  • Pink flower
  • Purple flower
  • Yellow flower
Climate
  • Desert Climate
  • Mediterranean Climate
  • Subtropics Climate
  • Temperate Climate
Ornamental parts
  • Ornamental flower
  • Ornamental leaves
  • Ornamental plant
Plant growing speed
  • Average growing plants
  • Fast growing plants
Plant life-form
  • Evergreen
  • Herbaceous
  • Perennial plant
Plant Uses
  • Drought tolerant plants
  • Ornamental plants
Planting Season
  • Autumn Planting
  • Spring Planting
  • Summer planting
  • Winter planting
Plants sun exposure
  • Full sun Plants
  • Part shade Plants
Watering plants
  • Small amounts of water
Hardiness zone
  • Hardiness zone 10
  • Hardiness zone 11
  • Hardiness zone 12
  • Hardiness zone 13
  • Hardiness zone 9

Growing in Pots, Balconies & Indoors

Pennisetum violaceum is a sun-loving ornamental fountain grass (reaching about 0.7-1.2 m (28-48 in)), not a houseplant, but it makes a superb container specimen for a patio or balcony. Indoors the light is far too weak for a full-sun grass; give it open air and full sun and it rewards you with arching foliage and plume-like flower spikes.

Quick Details

  • Container Size: Start at about 5 L (1.5 gal) for a small clump; for a full, free-flowering plant use at least 15-20 L (4-5 gal).
  • Indoor Suitability: Not a houseplant – it needs full sun and open air, so grow it on a bright balcony or patio.
  • Best Spot: Full sun; it tolerates light or half shade but then flowers less.
  • Soil & Drainage: Good-quality, well-aerated potting mix that drains freely.
  • Watering in Pots: Drought-tolerant once established; water more through the flowering season, but the pot must always drain freely.

Indoors & On the Windowsill

  • Houseplant limits: The grower is clear this is not an indoor plant – a room’s light is too weak for a full-sun grass, and it needs air movement to look its best.
  • Windowsill note: A very bright, sunny sill can hold a young plant briefly, but it will soon want to be outside; treat it as a patio or balcony grass.
  • Overwintering: In cold-winter climates a potted plant can be moved to a sheltered, frost-free spot (an unheated porch or garage) for winter and returned outdoors in spring – one of the main reasons to grow tender fountain grasses in pots.

On a Balcony or Patio

  • Light & wind: Give it the sunniest position. The plumes sway beautifully, but an exposed, windy balcony can flatten or dry them fast – shelter tall clumps from strong wind. Walls and railings reflect heat, so pots dry quickly; check moisture often in warm weather.
  • Practicalities: A large, well-filled pot is heavy – set it in place before filling, and make sure drainage water can escape without staining the balcony.

Choosing the Pot, Soil & Long-Term Care

  • Pot & drainage: A 15-20 L pot with strong drainage holes; skip a standing water saucer to avoid root rot. Terracotta breathes and dries faster, while glazed or plastic holds moisture longer.
  • Potting mix: A well-aerated potting mix (for example coir or peat with added perlite), as the grower advises.
  • Feeding: Potted grasses exhaust their mix faster than plants in the ground, so feed lightly through the growing season.
  • Repotting & division: Every few years check the root ball; when roots fill the pot, lift and divide the clump, cut back old roots, remove spent sections and let fresh roots grow, refreshing or replacing tired soil.

Grower’s Container Tip

  • Keep it flowering: The grower notes that a fountain grass stops flowering once its roots completely fill the container. Every few years, before it becomes pot-bound, divide the clump – reduce the number of shoots, trim the roots and pot up fresh divisions (or move to a larger container), and if the old soil is tired wash it off and replace it, so new roots and new flowers keep coming.

Bloom & Flower Guide

Quick Details

  • Bloom Season: Through the warm season — year-round in frost-free areas, but not in winter where it is cold
  • Flower Appearance: Soft, hair-like plumes in yellow, purple or pink, held in raceme-like spikes above the foliage
  • Edibility: Ornamental only — grown for its plumes, not for eating

Detailed Blooming Overview

Like its fountain-grass cousins, this species is grown for its feathery flower plumes, which arch and shimmer above the linear leaves. It blooms most freely in full sun over a long warm season. Do bear in mind it is invasive and aggressive, spreading readily by seed, so it is best sited where its seeding can be kept in check.

Flower Characteristics

  • Fine, hair-like flowers forming a soft plume.
  • Yellow, purple or pink, borne in raceme-like spikes.
  • Wind-pollinated, as grasses are.

Bloom Care & Thinning

  • Feed for bloom: a feed before flowering, plus a little extra water then, gives fuller plumes — on well-drained soil.
  • Containing self-seeding: removing the plumes before seed ripens helps stop it spreading beyond where you want it.
  • Tidy-up: cut back dead plumes and old foliage for design, most easily in winter.