✓ Nontoxic

Silver Buttonwood

Conocarpus erectus var. sericeus

Entirely nontoxic. A variety of buttonwood with silvery leaves. Safe for all ages.

The silver-leafed variety of the buttonwood is one of Miami Beach's most beautiful landscape trees. While the green buttonwood is a coastal native, the silver variety is prized for its stunning silvery-gray foliage that seems to glow in sunlight. It's the same species — just a natural color variation that catches salt crystals on tiny leaf hairs, giving it a frosted appearance.

Where to Find It

Widely planted in Miami Beach landscaping — along Collins Avenue, Lincoln Road, hotel entrances, and in the Miami Beach Botanical Garden. One of the most-used landscape trees in the city.

Key Features

●Silvery-gray leaves covered in tiny hairs that catch salt crystals
●Same species as green buttonwood, just a natural variety
●Extremely salt and wind tolerant
●Dense, twisting growth habit — often pruned into hedges or small trees
●Reflects sunlight beautifully — appears to glow
●Low-maintenance, drought-tolerant — perfect for South Florida landscapes

What Falls From This Tree

🍃Silvery leaves (year-round)

🍃Small button-like fruit clusters

Ecological Role

Provides the same coastal ecological benefits as green buttonwood — wind buffering, erosion control, and wildlife habitat. The silver variety is especially popular in urban landscaping because of its beauty and low water requirements.

Fun Fact

The silver color isn't paint or pigment — it's thousands of tiny hairs (trichomes) on each leaf that reflect light and trap salt crystals from sea spray. This is an adaptation to extreme coastal conditions. The hairs reduce water loss, reflect excess sunlight, and the salt crystals may even deter some leaf-eating insects.

Activities (1)

Silver vs. Green Leaf Comparison

All ages10-15 minutes

Find both silver and green buttonwood and compare their leaves side by side. They're the same species with different survival strategies visible to the naked eye.

Materials

Fallen leaves from both silver and green buttonwood

Steps

1.Collect a fallen leaf from each variety
2.Hold them side by side — same shape, dramatically different color
3.Feel both leaves — the silver one is slightly fuzzy (trichomes), the green is smooth
4.Use a magnifying glass if available — see the tiny hairs on the silver leaf
5.Wet both leaves — the silver one may repel water more (the hairs are hydrophobic)
6.Discuss: these are the SAME species. The silver one evolved extra hair as an adaptation to extreme salt and sun exposure. Same DNA, different expression.

Mess Level: None

Learning: Genetic variation within a species. Plant adaptations to environment. Trichomes and their functions. Nature vs. nurture in plants.

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