North America Non-native Plant

Leaf Between Flower

Botanical name: Bothriospermum tenellum

USDA symbol: BOTE4

Life cycle: annual

Habit: forb

Native status: Non-native, reproduces and persists in the wild in Hawaii  

Leaf Between Flower: A Lesser-Known Annual Worth Considering If you’ve stumbled across the curious name leaf between flower, you’ve discovered one of gardening’s more mysterious plants. Known botanically as Bothriospermum tenellum, this annual has an intriguing common name that hints at its unique flowering characteristics, though it remains one of ...

Leaf Between Flower: A Lesser-Known Annual Worth Considering

If you’ve stumbled across the curious name leaf between flower, you’ve discovered one of gardening’s more mysterious plants. Known botanically as Bothriospermum tenellum, this annual has an intriguing common name that hints at its unique flowering characteristics, though it remains one of the more obscure plants in the gardening world.

What Exactly Is Leaf Between Flower?

Leaf between flower is an annual plant, meaning it completes its entire life cycle within a single growing season. While information about this species is quite limited, it belongs to the flowering plant family and has established itself in certain tropical locations.

Where Does It Grow?

Currently, Bothriospermum tenellum is documented as growing in Hawaii, where it has naturalized and reproduces without human intervention. This non-native species has adapted well to Hawaiian conditions, though it’s not originally from the islands.

Should You Grow Leaf Between Flower?

Here’s where things get tricky. While this plant isn’t classified as invasive or noxious, there’s remarkably little information available about its cultivation, care requirements, or garden performance. For most gardeners, this presents both a challenge and an opportunity.

The Reality Check

Let’s be honest – Bothriospermum tenellum is something of a gardening enigma. With limited documentation about its:

  • Growing conditions and soil preferences
  • Mature size and growth habits
  • Aesthetic appeal and ornamental value
  • Benefits to pollinators and wildlife
  • Propagation methods

Most gardeners would be taking a leap of faith with this species.

Consider Native Alternatives Instead

Given the limited information about leaf between flower and its non-native status, you might want to explore native Hawaiian plants that offer known benefits to local ecosystems. Native species are typically better adapted to local conditions, support local wildlife, and contribute to preserving Hawaii’s unique botanical heritage.

Some excellent native Hawaiian alternatives for annual color include native wildflowers and herbs that have documented benefits for both gardeners and local wildlife.

If You’re Determined to Try It

Should you decide to experiment with Bothriospermum tenellum, proceed with caution and responsibility:

  • Source seeds or plants from reputable suppliers
  • Monitor its growth and behavior in your garden
  • Be prepared to remove it if it shows aggressive spreading tendencies
  • Document your experience – you might be contributing valuable information to the gardening community

The Bottom Line

Leaf between flower represents one of those botanical mysteries that occasionally cross our paths. While it’s not prohibited and may have garden potential, the lack of cultivation information makes it a risky choice for most gardeners. Unless you’re particularly adventurous or conducting botanical research, you’ll likely find more success and satisfaction with better-documented native species that support your local ecosystem.

Sometimes the most responsible gardening choice is to admire an unusual plant from afar while choosing proven performers for our gardens.

Leaf Between Flower

Classification

Group

Dicot

Kingdom

Plantae - Plants

Subkingdom

Tracheobionta - Vascular plants

Superdivision

Spermatophyta - Seed plants

Division

Magnoliophyta - Flowering plants

Subdivision
Class

Magnoliopsida - Dicotyledons

Subclass

Asteridae

Order

Lamiales

Family

Boraginaceae Juss. - Borage family

Genus

Bothriospermum Bunge - bothriospermum

Species

Bothriospermum tenellum (Hornem.) Fisch. & C.A. Mey. - leaf between flower

Plant data source: USDA, NRCS 2025. The PLANTS Database. https://plants.usda.gov,. 2/25/2025. National Plant Data Team, Greensboro, NC USA