Hartley Magazine

Greenhouse growing

Month by month

As seen in Gardens Illustrated A new guide on the 1st of every month

Written in United Kingdom

It may be December but there’s lots to do in the greenhouse

Start Amaryllis bulbs into growth, watering sparingly at first; just trickle a little tepid water around the bulb, then increase the amount as growth appears. Once they are actively growing, keep them constantly moist but not waterlogged and take care not to get the growth tip wet. They need temperatures around 20C so move them […]

Written in United Kingdom

Making the most of your greenhouse in autumn

Now that the weather is starting become distinctly autumnal, it’s time to pick your last tomatoes and ripen them on the windowsill or greenhouse. Some green, blemish free fruit can be stored in a cool drawer, to be ripened in the fruit-bowl or in a paper bag with an over ripe banana, as needed during […]

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Heat your Greenhouse efficiently

Ventilate the Greenhouse on warm days but reduce this when temperatures drop later in the month and the amount of shading, so crops ripen and to avoid problems with grey mould caused by damp air and cooler nights. Before bringing plants in for overwintering check them for pests and diseases, and treat accordingly. Red spider […]

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Lots to harvest and things to sow

It’s time to sow Fennel, oriental vegetables like mizuna greens and Pak Choi, rocket, coriander dill, spinach, claytonia and land cress in modules as soon as you can. These will germinate quickly and can be planted out by mid-August for cropping in autumn. Continue sowing ‘cut and come again’ crops like mixed herbs, in pots, […]

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April is the month when seed sowing is in full swing.

From now on the weather should begin to warm as spring progresses (note the use of the word ‘should’…. you never know these days!). Sow broad beans, spinach, cabbage, calabrese, kohlrabi, cauliflower, lettuce, peas for pods and shoots onions, salad onions, turnip, radish, beetroot, leeks, leaf beet and chard in the greenhouse. From the middle […]

Written in United Kingdom

Bubble wrap the inside of your greenhouse-us

Open greenhouse vents for as long as possible on mild sunny days, shutting them before temperatures drop early in the afternoon. The combination of high temperatures and low light makes leaves and stems soft, spindly and prone to grey mould which spreads rapidly in cool, damp conditions. Though good air circulation is vital, avoid chilling […]