Lavender
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Lavender

Lavandula angustifolia

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Basic Details
Description
Floral Formula
Features
Translations
Related

How to Identify Lavender

Lavender Identification Guide
Pet Safety Verdict: ⚠️ TOXIC TO PETS. Verified by ASPCA guidelines. Ingestion can cause gastrointestinal upset, vomiting, or other clinical symptoms. Keep away from cats and dogs.
Mounds of narrow, needle-like silver-gray foliage on square stems. Slender flower spikes with dense whorls of fragrant purple blossoms.

Care & Growing Guide

Full sun (6-8 hours); thrives in poor, rocky, sharply draining neutral-to-alkaline soils. Extremely drought-tolerant (Zones 5-9).

Seasonal Blooming & Hardiness

Seasonal Blooming Calendar: - Peak Bloom: Summer (typically June through September). - Planting Time: Sow seeds directly outdoors in early spring after the last frost, or transplant nursery starts in late spring.
Bloom Timeline
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About Lavender

NameLavender
Description

Lavender, botanically designated under the genus Lavandula and most widely represented by Lavandula angustifolia (English Lavender), is an exceptionally famous, highly aromatic evergreen perennial shrub belonging to the Lamiaceae (mint) family. Native to the sun-baked, rocky limestone hillsides and dry shrublands of the Mediterranean basin (particularly Southern France, Spain, and Italy), this globally revered herb is cherished for its intense, calming scent and spectacular spikes of purple-violet blossoms.

Forming tight, rounded mounded shrubs that grow 1 to 3 feet in height with a spread of up to 4 feet, Lavender features distinctive square-angled green stems and narrow, linear, needle-like silver-gray leaves. In mid to late summer, the woody shrub is crowned with numerous slender, upright flower spikes measuring 2 to 8 inches in length. Each spike carries dense whorls (verticillasters) of small, tubular, highly fragrant blossoms in a spectrum of deep cobalt-blue, lavender-purple, and soft pink.

The reproductive architecture of Lavender is represented by the botanical floral formula % ⚥ K(5) C(5) A4 G(2). This formula indicates that the flower is bilaterally symmetrical (zygomorphic) and bisexual. The calyx is composed of 5 sepals fused into a ribbed, hairy tube, while the corolla features 5 petals fused into a two-lipped tube with a 2-lobed upper lip and 3-lobed lower lip. The androecium features 4 stamens of unequal lengths (didynamous), surrounding a 2-carpellate superior ovary.

Horticulturally, Lavender is a tough, drought-loving Mediterranean native that demands full, hot sun and poor, highly rocky or sandy neutral-to-alkaline soils (pH 6.5 to 7.5). It is highly sensitive to wet soil, heavy clay, and extreme relative humidity, which quickly trigger fatal root rot. It requires sharp drainage, minimal fertilizer, and periodic pruning in late summer to maintain a compact, woody shape. It is highly cold-hardy, surviving in USDA zones 5 through 9.

The genus name Lavandula is derived from the ancient Latin word 'lavare' (meaning to wash), highlighting its historical use in Roman public baths for its skin-soothing, antiseptic, and highly aromatic qualities. Famed on the Indian subcontinent as Ustukhudus (उस्तुखुदोनों) in Hindi and Pundarika (पुण्डरीक) in Sanskrit, it serves as a global symbol of deep devotion, serenity, and mental clarity, with its essential oils forming the foundation of the world's perfume industry.

For detailed pet safety advice regarding dogs and cats, consult our dedicated Pet Guard Profile for Lavender.

Lavender is easily distinguished from other Lamiaceae members by its square stems, needle-like silvery leaves, and whorled flower spikes. It makes an excellent companion plant for other aromatic herbs such as Bee Balm, Cat's Whisker, and Thumbai. For more botanical profiles, explore our Flower Identifier.

FamilyLamiaceae
GenusLavandula
TribeOcimeae

Floral Formula & Features

Floral Formula% ⚥ K(5) C(5) A4 G(2)

Zygomorphic, bisexual, 5 fused sepals, 5 fused petals forming two-lipped corolla, 4 didynamous stamens, 2 fused carpels with superior ovary typical of Lamiaceae

Features
  • Scientific Name & Classification: *Lavandula angustifolia* (Lamiaceae). Famed as English Lavender, True Lavender, and Ustukhudus.
  • Identification Markers: Mounds of narrow, needle-like silver-gray foliage on square stems. Slender flower spikes with dense whorls of fragrant purple blossoms.
  • Floral Formula (% ⚥ K(5) C(5) A4 G(2)): Zygomorphic, bisexual flowers with a fused tubular calyx, a two-lipped corolla, 4 didynamous stamens, and a superior ovary.
  • Growing Requirements: Full sun (6-8 hours); thrives in poor, rocky, sharply draining neutral-to-alkaline soils. Extremely drought-tolerant (Zones 5-9).
  • Cultural Significance: Name derived from Latin 'lavare' (to wash). Revered globally as the ultimate aromatic symbol of serenity, purity, and relaxation.
  • Safety & Toxicity: TOXIC TO PETS. Contains linalool and linalyl acetate which cats and dogs cannot digest, causing gastrointestinal upset if eaten.
  • Common Look-alikes: Confused with Russian Sage or Salvia, but easily distinguished by its needle-like silvery leaves and highly distinct lavender aroma.
  • Internal Links: Thrives in low-water Mediterranean rock garden borders when paired with Bee Balm, Cat's Whiskers, or Thumbai; explore more in our Flower Identifier.
  • Internal Links: Compare key differences in our Lavender vs Salvia comparison, or try our instant Flower Identifier.
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Popular Botanical Comparisons

Confused about identifying Lavender? Compare key features, visual guides, and toxicity side-by-side with similar flowers:

Names in Different Languages

Latin / ScientificLavandula angustifolia
English (Alternate)English Lavender, True Lavender, Spike Lavender, Narrow-Leaved Lavender
Hindiलैवेंडर (Lavender), उस्तुखुदोनों (Ustukhudus)
Tamilலவண்டர் (Lavandar), இலவன்டுலா (Ilavandula)
Teluguలావెండర్ (Lavender), సుగంధ పుష్పం (Sugandha Pushpam)
Malayalamലാവെൻഡർ (Lavender)
Kannadaಲ್ಯಾವೆಂಡರ್ (Lavender)
Sanskritउस्तुखुदूस (Ustukhudusa), पुण्डरीक (Pundarika)
Bengaliল্যাভেন্ডার (Lavender)
FrenchLavande, Lavande vraie, Lavande officinale
RussianЛаванда узколистная (Lavanda uzkolistnaya)
SpanishLavanda, Espliego, Alhucema
GermanLavendel, Echter Lavendel
ItalianLavanda, Lavandula
Chinese薰衣草 (Xūnyīcǎo)
Japaneseラベンダー (Rabendā)

Toxicity & Safety

StatusToxic

Always keep toxic plants out of reach of children and pets. Consult a veterinarian or medical professional immediately if ingestion is suspected.

Frequently Asked Questions

Q: What is the difference between English and French Lavender??
English Lavender (Lavandula angustifolia) is highly cold-hardy, has narrow needle-like leaves, and produces the sweetest essential oil. French Lavender (Lavandula dentata) has serrated leaves, is frost-sensitive, and has a more medicinal, camphorous scent.
Q: How often should I prune my Lavender plants??
Prune Lavender once a year in late summer after flowering is complete. Cut back the leafy stems by one-third, but never cut down into the woody, leafless base of the stems, as wood will not sprout new growth.
Q: Why did my Lavender plant die over the winter??
The most common reason is wet soil rather than cold temperatures. Wet roots during cold seasons cause rapid root rot. Ensure your Lavender is planted in sharply draining, sandy or rocky soil, ideally in raised beds.
Q: Can I use Lavender flowers in cooking and baking??
Yes, English Lavender is highly popular for culinary uses, adding a sweet floral flavor to teas, shortbreads, honey, and herb blends like Herbes de Provence. Use it sparingly, as the flavor is highly concentrated.

What is Floral Formula?

A floral formula is a symbolic representation of a flower's structure using letters, numbers, and special symbols. It provides a concise way to describe the arrangement and number of floral parts.

Example Formula
% K(6) C1+2+(2) A(9) G2

This formula describes the flower's symmetry, sepals, petals, stamens, and carpels in a standardized format.

Formula Sequence

  • Bract: Br or Ebr
  • Bracteole: Brl or Ebrl
  • Symmetry: % (Radial) or ⊕ (Bilateral)
  • Sex: ♀ (Female), ♂ (Male), or ⚥ (Bisexual)
  • Calyx/Sepal: K<number> (Free or Fused)
  • Corolla/Petal: C<number> (Free or Fused)
  • Androecium: A<number> (Free or Fused)
  • Gynaecium: G<number> (Superior or Inferior Ovary)

Symbol Meanings

  • Numbers: Indicate quantity of parts
  • Parentheses (): Parts are fused together
  • Plus (+): Parts in different whorls
  • Underline: Superior ovary position
  • Overline: Inferior ovary position
  • ∞: Numerous parts (too many to count)

Understanding floral formulas helps botanists quickly identify and classify flowers based on their structural characteristics.