HOW TO GROW ALLIUM GIGANTEUM FROM SEED



The flowers of the Allium giganteum are impressive by anyone's standards, and a personal favourite of my own. You can readily purchase them in the spring as bulbs - huge bulbs obviously - but as you can imagine, just one bulb can be pricey. However, growing Allium giganteUm from seeds is surprisingly easy and as a hardy plant you can choose to grow them inside under protection or outside in a prepared seed bed.

TIP. Your giant alliums should germinate straight out of the pack, but if you purchased them early and are not ready to sow them yet then I would keep them in the bottom of the fridge to help break any dormancy issues and improve germination rates.

Growing Allium giganteum indoors

Using a seed tray, sow Allium seeds from January to mid March at 15-20C (60-68F), on the surface of a good quality seed compost such as John Innes 'Seed and Cutting', then gently firm down.

Keep the soil damp but not wet, and place the seed tray either in a propagator or seal the seed tray inside a polythene bag until after germination - which usually takes about 3 months.

Make sure that the tray is placed in a bright position but out of direct sunlight.

Giant ornamental onion seed needs a cold period in order to help break any seed dormancy before they can germinate and so if germination does not occur by the end of 3 months, transfer the container to a fridge (not freezer) at 5C (40F) for a further 3 months.

Check regularly while in the fridge and remove once seeds start to germinate.

You may need to repeat this cycle if germination does not occur as germination can often be erratic taking from 30-365 days to emerge!

However, in my experience  - and you can only truly know that you are using fresh seed when you collect it yourself - alliums have always germinated without incidence.

When seedlings are large enough to handle, transplant and grow them on into cooler conditions until they are large enough to move outdoors.

Move to a cold frame and plant out the during following spring, at a distance of 30cm (12") apart, in light sandy, well drained soil in full sun. When growing alliums, plant them where the leaves of other plants will cover the base of their stems. This will hide the old foliage which rather irritably dies back before flowering begins.

Growing Allium Giganteum from seed outside

When growing enormous Allium gigantem from seed, the secret is in the preparation. To begin with you need a sunny site with good drainage.

If you are planning on growing them outside then you can start by preparing a seed bed in the autumn by digging in plenty of well-rotted farm manure. This will give the ground a chance to settle over the winter period and allow frosts to break down the soil clods. If you soil is too acidic – below pH 5.5 – you will need to add lime to it according to manufactures recommendations. In general, giant ornamental onions prefer a pH of between 6 and 7.5.

It's possible to grow giant ornamental onions on heavy soil, but you must improve the drainage first before planting. Add plenty of horticultural grit and bulky organic matter to the soil and then create a ridges of soil 4 inches high to further reduce soil moisture.

You can sow Allium gigantem seeds as soon as your soil will allow which can be any time from late February until the end of July.

Giant ornamental onions like a firm bed so tread over the area you have just raked. Try adding a general fertiliser like growmore for extra fertility.

Choose a dry day to sow Allium gigantem seed when the soil is moist but not too wet, then plant the seed very thinly into drills ½ inch deep. If you are planting more than one row then each row should be at least 4 inches apart. Carefully cover the Allium gigantem  seed with soil and gently water in.

Germination should then take approximately 21 days to occur. Once the new seedlings have began to push through the soil they can be thinned out to between 1 and 2 inches apart. Remember to clear away all of your discarded thinning so as not to attract onion fly.

You will need to keep a particular eye on the newly sprouting shoots as these can attract the attention of inquisitive birds – particularly pigeons and black birds - who will lift them straight out of the seed beds for nothing more than a little mischievous fun. If you don't have some kind of protection in place you can end up loosing almost an entire batch!

Giant ornamental onions are not very good at suppressing weed growth, and if regular weeding is neglected they will easily be out competed for nutrients resulting in your juvenile Allium gigantem plants becoming stunted. Try to leave enough space between the rows to get your hoe in for weeding, but always hand-weed any weeds close to your Allium gigantem as they can be easily damaged by garden tools.

For further information click onto:
Allium giganteum
Allium giganteum
Asparagus Soup
Blight Resistant Tomato Seeds - Tomato 'Ferline'
Buy Allium giganteum Seed
Buy Okra Seed
Buy Giant Onion Seed
Buy Giant Ornamental Onion Seed
Buy Sweet Pea Seeds
Gardenofeadenornamental1
Growing Garlic in Pots and Containers
Garlic
Growing Carrots
Growing Carrots from Seed
Growing Cucumbers form Seed
Growing Garlic in Containers
Growing Mushrooms 
Growing onions in Africa
How to Grow Giant Celery from Seed
Growing Giant Onions from Seed
Growing Onions from Sets
Growing Onions From Seed
Hardy Spider Lilies
How to Germinate and Grow Cucumbers from Seed

How to Germinate and Grow Melon Plants from Seed
How to Germinate and Grow Okra from Seed Indoors
How do you Plant Out Onion Seedlings?
How to grow Allium Giganteum from Seed
How to Grow the Angel's Trumpet from Seed
How to Grow Aubergines From Seed
How to Grow Avocado from Seed
How to Grow Beetroot from Seed
How to Grow Brussels Sprouts from Seed
How to Grow Butternut Squash
How to Grow Cabbage from Seed
How to Grow Carrots from Seed
How to Grow Celery from Seed
How to Grow Chinese Spinach from Seed
How Grow Courgettes from Seed
How to Grow Celery from Seed
How to Grow Cucumbers from Seed
How to Grow Cauliflowers from Seed
How to Grow Cucumbers from Seed
How to Grow Cucumbers from Seed
How to Grow Eggplants from Seed
How to Grow French Beans from Seed?
How to Grow French Beans from Seed
How to Grow From Seed
How to Grow Garlic
How to Grow Garlic in Pots and Containers
How to Grow Geraniums from Seeds
How to Grow Giant Onions
How to Grow Giant Vegetables
How to grow Japanese Onion Sets
How to Grow Leeks from Seeds
How to Grow Radish from Seed
How to Grow Peanuts
How to Grow Peppers from Seed
How to Make and Prepare an Onion Bed
How to Make my Recipe for English Onion Soup
How to Grow Marrows from Seed
How to Grow Mushrooms
How to Grow Mushrooms at Home
How to Grow Oyster Mushrooms
How to Grow Okra from Seed Outdoors
How to Grow Onions from Onion Sets
How to Grow Red Kidney Beans from Dried Seed
How to Grow Rocket from Seed
How to Grow Plants
How to Grow Potatoes
How to Grow the Snake's Head Fritillary
How to Grow the Snakes Head Fritillary from Seed
How to Grow Spinach from Seed
How to Grow Sweet Corn from Seed
How to Grow Sweet Corn
How to Grow Sweet Potatoes in Pots or Containers
How to Grow Tomatoes?
How to Grow Tomatoes from Seed
How to Grow Vegetables?
How to Plant Garlic
How to Propagate and Grow Chili Peppers from Seed
How to propagate the Foxtail Lily
How to Propagate and Grow Sweet Peppers from Seed
How to Propagate and Grow the Bell Pepper from Seed
How to Sow and Grow Courgettes from Seed Indoors
How to Sow and Grow Courgettes from Seed Outdoors
How to Sow and Grow Spring Onions from Seed
How to Take Cuttings from Sweet Potatoes
Is a Peanut a Nut?
MADONNA LILY - Lilium candidum
Mexican Jumping Bean
Onions
Onion Soup
Planting Onion Sets
Planting Radishes from Seed
Plants
Potagers
ROUND HEADED LEEK - Allium sphaerocephalon
SPIDER LILY - Hymenocallis species and cultivars
The Peanut
THE PIG FACE FRUIT - Solanum mammosum
The Plant Hunters
The Mushroom
The Snake's Head Fritillary - Fritallaria meleagris
The Hardy Spider Lily
What is Crop Rotation?
What is a Peanut?
What is Quinoa?
What is a Seed?
Where do Peanuts come from?
Which Vegetable Seeds can be Sown in January?
Which Vegetable Seeds can be Sown in August?
Why haven't my Seeds Germinated?
Why do Onions make you Cry?


No comments: