Devil's Backbone 'Nana Green'

Devil's Backbone 'Nana Green'

Euphorbia tithymaloides 'Nana Green'

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Difficulty — Beginner

A curious, characterful little shrub whose stems zigzag from node to node as though they could not quite decide which way to grow — hence the common name, Devil's Backbone. The Nana Green is the compact, all-green form, dense and bushy where the species sprawls. Take care: like all euphorbias she bleeds a milky latex when cut, and it is an irritant to skin and eyes, so handle her with respect and washed hands.

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Notes on Cultivation

Light

Bright light keeps her stems sturdy and her zigzag tight, and a few hours of gentle direct sun are welcome. Kept in shade she grows leggy and loose, reaching unhappily toward the window.

Water

Treat her as the semi-succulent she is: water well, then let the top few inches dry before the next drink. She forgives a forgotten watering far more readily than a heavy hand, for sodden roots are the quickest route to her ruin.

Humidity

Average room humidity suits her entirely. She is no fussy jungle creature and will not thank you for misting.

Temperature

She prefers warmth, 65 to 85 Fahrenheit, and dislikes the cold. Keep her well above 50 Fahrenheit, for she has little tolerance for a chill and may drop leaves in protest.

Soil

A free-draining mix — a cactus-and-succulent blend, or potting soil cut generously with perlite — keeps her roots sweet. Drainage, as ever with euphorbias, is non-negotiable.

Fertilizing

A balanced, diluted feed once a month through spring and summer is plenty. She is not a greedy plant, and modest feeding keeps her compact and content.

Propagation

She roots readily from stem cuttings, but first blot or rinse the cut end to stop the latex, then let it callus for a day or two before planting — this guards against rot. A callused cutting settles nicely into a clear cup of lightly-moist Fluval Stratum, our signature method, kept only just damp rather than wet. Read the full field method.

Field Observations

That milky sap is the whole genus's defence; keep her clear of curious pets and children, and never let the latex near your eyes. A small caution, easily kept.

In strong light and cooler months her stem tips may blush faintly and she can throw small, slipper-shaped bracts — a quiet bonus from an already obliging plant.

— faithfully recorded by Mr. Phileas Plant