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Jan

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Apr

May

Jun

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Aug

Sep

Oct

Nov

Dec

May

Check for weed growth and ensure they are watered well. Avoid damage to the stems, staking if necessary. During prolonged dry weather, give plants a good soak.

Buy bulbs from Thompson and Morgan.

June

Keep checking your plants and make sure they are well supported. Don't forget to give them regular soakings in dry weather.

July

Gladioli are very susceptible to being blown over and will probably need support unless they are growing through other plants – another way to help them stay upright is to draw soil around the base of the plant to support the stem.

August

Cut flowers for indoor displays as soon as the first flower bud on the stem has just started to open so that you get the maximum benefit from your cut flowers. When cutting a flower stem length is important but try to leave as many leaves as possible on the plant so that the corm can benefit from the maximum nourishment provided by the leaves for the rest of the season.

Buy bulbs from Thompson and Morgan.

September

New corms will have formed on top of the old ones. Bulblets will have also formed but leave both of these undisturbed for now.

October

You really should lift your gladioli before the hard frosts to ensure their survival into next year. Lift the corms using a garden fork and take care not to damage them, remove the soil and trim off the old stem and the majority of the roots. Put the corms in a dry airy place for a week or two to dry out thoroughly. Storage over winter should be in a frost free environment which is not too warm as this will cause the corms to dry out too much and loose vitality.

November

Clean your corms, discarding old, shrivelled corms. If you plan to plant the bulblets next Spring, remove these and store separately to the main corms. Remove the tough, outer skins and treat the corms if thrips are seen. Destroy any corms showing signs of disease or rot. If you have a particular site for growing gladioli, prepare it now by double-digging and adding some well-rotted manure. Gladioli prefer a medium, moist soil.

Buy bulbs from Thompson and Morgan.

December

Check corms are healthy and throw out any that are diseased.

January

When your ordered corms arrive first check them for damage and then store in trays or bags with holes cut in for ventilation.

February

It is possible to get early flowering Gladioli if you get them going in the greenhouse this month - simply place the corms in seed trays in full light and wait for them to sprout - control aphids if they appear. Temperature should be kept to at least 10 degrees Celsius. The newly sprouted corms can be planted out 4 to 6 inches deep and either in blocks or rows 12 to 15 inches apart - if you have not yet prepared the ground for planting out then it must be done at the first opportunity.

Buy bulbs from Thompson and Morgan.

March

Corms can be planted towards the end of the month. For exhibition, plant in single or double rows or for ordinary use, plant in groups in a mixed border. Corms should be 5-6 in. apart and 4-6 in. deep. If the soil is light you should plant to the deeper depth which helps to support the flower spikes. Planting successively every couple of weeks will give you a continuous supply of blooms. Cormlets saved from last year can be planted close together in rows with a layer of sand above and below.

April

Keep weed growth down by shallow hoeing. Hoeing will also help to aerate the soil. Do not water until about the end of the month.

Gardening information, hints and tips on how to grow Gladioli in your garden including watering, plant support, growing for cut flowers and general care advice.