Hartley Magazine

All the latest news, hints, tips and advice from our experts

Using Biological Controls in Your Greenhouse

A while ago a gardener asked me what my greenhouse’s greatest insect problem was. I answered whitefly, which is a terrible nuisance that can easily get out of control. That conversation got me thinking about the Sisyphean task of trying to eliminate my whitefly infestation by spraying infected plants with Safer’s Insecticidal Soap. The more […]

What to Consider When Buying a Greenhouse

What should you consider when buying a greenhouse? Most people look first at the cost, then at the size, and only then at what they’d like to grow. But this order is backwards. The first consideration should always be what you want to use a greenhouse for. That decision will determine both the size and […]

Growing Vegetables in a Winter Greenhouse

With the cost of produce steadily rising, greenhouse owners may want to try growing their own vegetables this winter. Quite a few plants will continue growing in cool conditions as long as they don’t freeze. The minimum temperature in your greenhouse should be somewhere above 40°F during the night and on cloudy days, although at […]

Keeping Mandevilla in Your Greenhouse

Mandevilla, with their numerous, large, brilliantly colored flowers, are highly prized for the tropical look they give to summertime decks and patios. Knowing that these plants originate from South America, mostly Brazil, gives a clue to the conditions they prefer – warm temperatures and plenty of sunshine. In general, mandevilla need at least six or […]

A Country Garden Starts in the Greenhouse

A month or two ago, I was watching an English whodunnit and was impressed by the country gardens where the story took place, so I decided that this year I would expand my English country-style flower garden. I purchased seeds for hollyhocks, cleome, rudbeckia, coreopsis, primrose, and columbine and planted them in my basement germination […]