summer flowering perennials

Allium oxyphyllum

The Acid Onion

Looking lovely in the late July garden is the rare North American native Allium oxyphyllum. This little-known species hails from the shale barren (eroded, and often baking steep slopes of degraded shale) region of Virginia and West Virginia, where it is extremely rare, with a global G2 rank. The 1′ tall x 1′ wide clump

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Lychnis senno 'Once in a Vermillion'

A Cool Forest Fire

If you want to create a colorful, fire-like spark in your woodland garden, without endangering your neighbors, there are few plants better than our 2021 introduction, Lychnis senno ‘Once in a Vermillion’. This Chinese woodland native catchfly, has proven both durable and reliable, starting to flower for us in July, and continuing through September. Below

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Philandering in the Swamp

We were recently checking our nursery swamp pink seedlings of Sabatia foliosa and to our surprise we found that most of the offspring looked nothing like the parent. Unbeknownst to us, our garden plant from which we gathered seed had been sexually involved with a nearby Sabatia kennedeyana. The resulting crop of plants were perfectly

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Spider Lily of the Aztecs

Flowering now is the amazing Hymenocallis azteciana, from Northern Mexico. The wide glacous foliage, which doesn’t emerge until June, is enough reason to grow this dazzling spider lily, but the clumps are also topped with 3′ tall spikes of narrow-petalled white flowers, which open each evening. Our form is from an original collection in Jalisco,

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