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Greenhouses Harrow

This page provides relevant content and local businesses that can help with your search for information on Greenhouses. You will find informative articles about Greenhouses, including "Using Greenhouses to Extend the Growing Season". Below you will also find local businesses that may provide the products or services you are looking for. Please scroll down to find the local resources in Harrow that can help answer your questions about Greenhouses.

The Plantation Garden Centre Ltd
020 84232073
Kenton Road
Harrow, EN

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Stonegrove Gardens Community Hall
020 89586164
Stonegrove Gardens
Edgware, EN

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Malcolm Kass Home & Garden Centre
020 89583836
1 Canons Corner
Edgware, EN

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Gardens Etc
020 89544628
Common Road
Stanmore, EN

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The Greenhouse
020 89059189
Birchen Grove
London, EN

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Wyevale Garden Centres Plc
020 84283408
Headstone Lane
Harrow, EN

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Jacques Amand
020 84207110
The Nurseries
Stanmore, EN

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Haste Hill Nurseries
01895 674896
Fore Street
Pinner, EN

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Carpenders Park Nursery
020 84201959
Little Oxhey Lane
Watford, EN

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Mill Hill Garden Centre
020 89064255
Daws Lane
London, EN

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Using Greenhouses to Extend the Growing Season

As with so many aspects of gardening, it rather depends upon what you want.

Most amateur gardeners have not the time and dedication to heat the greenhouse throughout the chilly months. Nevertheless the greenhouse can be a valuable asset at almost any time of the year.

Here are some ways of using greenhouses to extend the season, mainly for food crops, without additional heating.

Using greenhouses and cold frames to start off seedlings

If you have no heating at all and you are in a temperate part of the world, you will probably need to use a heated propagator for starting off your seedlings. An unheated greenhouse will be too cold for early crops.

Later in the year (around April onwards for the UK,) seedlings will often thrive without extra heat. You need either a good bench or work surface (staging) in the greenhouse or alternatively a seed tray stand. The seedling trays should be kept off the floor as that is the coldest spot in the greenhouse.

Cold frames can also be used but you may need to supply some kind of heat until the frosty months are past. If you have a greenhouse and some unheated propagators this can be a part solution. Start seedlings inside the house in the propagators and move them outside when they are seedlings have germinated.

A double thermometer is a useful tool as it allows you to see the lowest temperature of the previous night. You can use this to help you judge when it is warm enough for any particular seedling to be put into the greenhouse. (The maximum temperature shown also helps you plan your greenhouse's ventilation.)

If you want a good guide to greenhouse or sunhouse growing, consider the Greenhouse Gardener's Companion for a good all round manual which covers just about everything - and it's quite humorous too!

Using greenhouses for growing on seedlings using greenhouses: salad crops can grow on in the greenhouse

Many of the smaller vegetables can be given a good and early start by growing them on in the greenhouse. Beans , especially dwarf varieties can be grown in pots and tubs. Some, such as French dwarf beans can even be grown to maturity in the greenhouse.

Leeks and onions can be started in boxes of soil. Cabbage family seedlings can be given a good head start by keeping them inside the greenhouse for a few weeks.

All these plants will need to be hardened off gradually before they are put out into their permanent quarters.

Using greenhouses, picture right: salad crop seedlings can get a quick start in the greenhouse during spring or autumn

Using greenhouses for over-wintering crops Many small vegetables such as lettuce and mizuna can be ...

Using greenhouses and cold frames to extend the growing season for vegetables and salad crops makes sense for those of us in the chillier parts of the world. You can start seedling plants which would otherwise struggle outdoors in early spring and you can carry on cropping from mature plants well into autumn.

So what are the best ways of using greenhouses for home crops?

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