Author Archives: Juergen Steininger

About Juergen Steininger

Juergen Steininger is a grower at Longwood Gardens in Kennett Square, Pa. He can be reached at juergensteininger@yahoo.com.

Grow Stars In The Greenhouse

Potted sun stars (Ornithogalum dubium) are nearly unknown in the U.S., but in Europe, they are prized and sought-after pot plants, consistently fetching top price at the flower auction. O. dubium is a geophyte, or bulbous perennial plant. Depending on the cultivar, the bulbs produce five to eight deep green, glossy leaves that are arranged

Grow Ornithogalum In The Greenhouse

Potted sun stars (Ornithogalum dubium) are nearly unknown in the U.S., but in Europe, they are prized and sought-after pot plants, consistently fetching top price at the flower auction. O. dubium is a geophyte, or bulbous perennial plant. Depending on the cultivar, the bulbs produce five to eight deep green, glossy leaves that are arranged

Hydrangea’s Hidden Potential

Even while the market continues to look for a wider selection of high-quality crops, hydrangea remains underused, both as a cut flower and a pot plant. Until recently it was next to impossible to get properly prepared rooted cuttings for a blue hydrangea program in the U.S., so that is likely a factor. Why should

Potted Calla Lilies: Everything You Need To Know

Callas fit many market segments. Most growers know callas can be grown as a pot plant or cut flower. Few, however, know some cultivars fit nicely into any program for bedding plants, upscale patio containers or specialty cut flowers.

Big On Blue (Poppy)

It’s March at Longwood Gardens and the Himalayan blue poppy is once again on display in our indoor gardens, turning the conservatory into a dazzling show of sky-blue blooms. Unfortunately, the show ‘Lingholm’ meconopsis puts on lasts for only a short time. Each flower spike carries three to five buds opening in close succession over

A New Twist On Freesia

I am always surprised to hear growers say they think freesias are not an interesting product. Many say freesias are not in vogue, that they’re old-fashioned or a crop without profit. I say today’s freesia cultivars make excellent cut flowers, and with the right treatment they can be excellent potted plants, too. Longwood Gardens visitors

Potted Tulip Guidelines For The Greenhouse

Who would connect tulips with stories from the Orient? The prevalent perception is that tulips are native to Holland. Yet, before they were introduced to Holland, they had been cultivated in the Orient for ages. At the court of the Turkish sultan, tulips were grown in the palace gardens. Early tulips were cultivated from wild

The Lowdown On Daffodils

The growers at Longwood Gardens force tens of thousands of daffodils into flower every winter, providing a glimpse of what’s to come: spring. Now, I want to empower you with the essentials you need to grow equally impressive daffodils.  Daffodil Basics Daffodil bulbs can be obtained in different grades, as well as standard dry bulbs

Producing Asiatic Lilies

Over the last few years, the Longwood Gardens lily program expanded to include an assortment of lily cultivars: Easter lilies, Asiatic, Oriental and hybrid lilies. Next year, Longwood will be growing lilies almost 10 months of the year, and its visitors are always delighted to see such amazing lily displays. This year’s OFA Short Course was