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Spray Chrysanthemums
 
Propagation; see here
Varieties; see here
Week 2-4; Put stools on hotbed Week 20-22; Stop
Week 8-10; Take cuttings Week 24-26; Nitrogen feed
Week 10-12; Pot up rooted cuttings Week 26-30; Secure bud
Week 12-15; Put in Cold frame Week 28-30;  Potash feed
Week 18-20; Prepare beds Week 30 onwards Ready
Week 20-22; Plant out Week 42-46; Lift and Store

Cultural Instructions;

Prepare purchased stock;

Unpack plants immediately on receipt.

If you can not deal with them straight away, stand the plants upright and give them a gentle spray of water place them in the light, but not in direct sunlight.

If plants are received before it is safe to plant them out where they are to flower, pot them up as soon as possible into 90mm (3½”) pots using a soil-less potting compost e.g. John Innes No2.

Do not be tempted to plant out until all danger of late frost has passed.

Keep the compost open – DO NOT over compress.

Water in, and don’t water again for several days until the compost has started to dry out.

Grow on in a cool greenhouse, cold frame, conservatory or airy porch in full light but avoid direct sunlight.

Propagate own stock;

Prepare cutting material;

From Week 2 onwards;

Water then place previously boxed stools on hot bed set to maintain a soil temperature of around 15°C (60°F)

Maintain a minimum air temperature of 4°C (40°F)

Prepare compost;

1
2
3

 

 

 

1) Sifted Compost

2) Two parts compost + one part silver sand (or as you deem necessary)

3) Prepared compost

Prepare a tray by filling it with prepared compost,and lightly compact it by tapping it gently on the bench then soak it thoroughly with water.

Sprinkle about 3mm (1/8") of silver sand over the compost.

Prepare Cuttings:

1. Select cuttings approx 2” (50mm) long radiating from soil level i.e. basal cuttings.

2. Remove lower leaves to expose approx 1” (25mm) of stem.

3. An Irishman's cutting i.e. one that is already rooted

4. Dip cutting in rooting powder /fluid (optional)

5. Insert the cutting into the compost and label variety

6. Normally one can get around 40 cuttings in a standard 350 x 200mm (14" x 8") tray

Aftercare;

Place the tray in a warm place, preferably with bottom heat.

A soil temperature of around 15°C (60°F) and a minimum air temperature of 4°C (40°F) is ideal.

Give the cuttings plenty of light, but ensure that they are not scorched by direct sunlight.

Spray cuttings at least once per day with either fresh water or a fungicide mixture to prevent dehydration.

Normally cuttings take 12 to 15 days to root.

A good sign that they have rooted is, the growing tip will be a ‘fresh’ green colour.

Pot rooted cuttings up into 75 mm (3") pots of potting compost.

Approx 10-14 days before you intend to set the plants out, start hardening them off by increasing the ventilation, placing in a cold frame, or moving the plants outside during the day and then bringing them back inside overnight.

Plant out:

When all fear of late frost has passed, remove the plants from their pots and plant out in pre-prepared beds and borders see here

Set them 400-500mm (15”-18”) apart supporting each with a 1200mm ( 4’ ) cane/stake.

To avoid any damage to the roots, position the supports in the hole prior to planting.

Tie the plant loosely to the support at regular intervals as the plant grows taller.

An alternative method  of support is to use 100mm(4") square mesh supported horizonatally from posts/stakes, and letting the plants grow through it.

Use of a weed suppressant sheet can minimise the need to hand weed or hoe between plants, which is particularly helpful when the plants are fully grown.

Watering;

Water in after planting, but not again for at least three or four days.

Water regularly from this time onwards giving a thorough soaking every seven days in all but the rainiest of weather.

Feeding;

Feed with a liquid fertiliser every 7- 10 days from mid June until the buds start to show colour.

Stopping;

Is best carried out over a three or four week period and completed by Week 22.

When the plants have grown to about 200-250mm (8”-10” ) high pinch out the top 50mm (2”) of the main shoot to encourage more side shoots.

If you are growing for exhibition purposes, then you would limit the sideshoots to 3-4 stems per plant depending upon variety.

When the buds/s appear remove all the buds on each stem apart from the centre bud (crown bud)

Lifting/Storing:

After flowering, plants should be cut down to 100-150mm (4"-6") above soil level, lifted, and placed in boxes or trays of potting compost and stored in a frost free place until required.

It is advantageous to remove all basal growth from around the base of the plant to induce a dormant period and reduce the risk of botrytis.

It is advantageous to remove all basal growth from around the base of the plant to induce a dormant period and reduce the risk of botrytis.

 

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