It’s late August, and it’s hot, but my unheated greenhouse needs to be readied for winter vegetables. I’ve developed a method for getting this job done, one that not only adds nutrients to the soil but that also adds a natural heat source. Here’s what that method entails. I start by digging out the greenhouse’s […]

Some while ago visiting gardens on the east coast, I came upon a greenhouse that had a piece of seaweed hanging from its cornice. It woke a memory of my childhood in Ireland and staying at bed and breakfast near the sea. The owner would hang a long tendril of seaweed beside the back door […]

Autumn is arriving, night time temps are dropping. But your garden, especially your containers, have finally come into their own at the end of the season. You’d love to carry some of this beauty on inside a greenhouse. But how do you decide which ones should be sheltered? That’s a question C.L. Fornari examined in […]

Fall is a brilliant time for planting. The ground is still warm enough to encourage root growth, and the fierce battering of summer heat has lifted, which means less work for you. But there’s another reason autumn is the best time for both new plantings and the shaping of certain woody plants, either in the […]

In summertime, it’s hot and dry in much of America for extended periods of time, but plants still need water – typically lots of it. What’s more, keeping greenhouse plants watered in these extreme conditions is made even harder when local communities impose lawn and garden watering bans to conserve their rapidly depleting water resources […]

Hasn’t this been the challenging summer? Here in the Rockies, we’ve experienced cool days and regular drenching rainfall seemingly every afternoon from June to July — the garden loved it! But. Unseasonable cool days and nightime temps below 50° were not a joy for the edibles: Were I growing tomatoes in a greenhouse, the harvest […]

In the dog days of summer, entering the greenhouse is like entering a sauna. Working there, even with the door and windows open, is a form of masochism that even I balk at. But work in it I must. Although my 200+ plants have been moved outdoors, there are still summertime maintenance tasks to do […]

Delicate herbs – lemon verbena, bayleaf, rosemary, lavender, lemon balm to name few – benefit from greenhouse cultivation, because they are either not cold hardy, or the open garden is shady, so the herbs don’t receive the minimum six hours of direct sunlight they require to do their best. Given a seat in a sunny […]

It’s that time of year when flowers, all kinds of flowers, take center stage. This month, I’ve asked my garden colleagues—from Alaska to Puerto Rico—to nominate their longest bloomers. Consider adding these power-packed blossoms to your garden. Many may be started in the greenhouse for next year’s long-running displays. Alaska Pat Ryan, Education Specialist at […]

Let’s face it, a real joy of gardening comes from buying plants. However, consider taking cuttings from tried-and-true plants in your own garden or greenhouse. It’s a game of numbers. This replication allows you to design with large drifts of the same plant, or repeat certain plants in various containers in order to visually unite […]

Paging through the annals of Hartley Botanic’s online magazine, I came upon the headline from a piece published nearly two decades ago, titled “Use winter to read up on gardening and greenhouse techniques”. It’s not an exhaustive piece of garden know-how but is a guide back in time to a couple of worthwhile books by […]

Dahlias have become a very popular flower to grow in home gardens, but in New England the season for them is normally quite short. It’s best to plant dahlia tubers outdoors when the ground temperature is above 55oF (12oC), which for me in Rhode Island means not until late May or early June. So if […]