Rose Blindness

Rose Blindness

A disappointing display of flowers on rose bushes and climbers can be a result of ‘rose blindness’.  The term blindness in gardening terms refers to the failure to flower and is common in daffodils that become constricted (see below).

black-spot on rose tree

Reasons for Poor Flowering

  • Due to environmental conditions in some years roses flower badly despite the best efforts of gardeners.
  • An empty flower case can be caused by frost damage.
  • Poor fertility in the soil and lack of trace elements and nutrients
  • Excessive shade
  • A build up of old wood and weak growths
  • Infection such as this severe case of blackspot
  • Some varieties are just prone to intermittent blindness

Avoiding & Curing Rose Blindness

  • Careful positioning of your roses in the sun without too much competition from other plants.
  • Improve cultivation to relieve stress, add humus, water regularly, apply fertilisers and fungicide if needed.
  • Reduction in the amount of old wood to encorage new healthy shoots.
  • Cut back a blind shoot by half it’s length to stimulate further growth

Cure for blind bulbs

Daffodil Blindness

A better rose with a super scent that a blind person would appreciate.

Quick Facts about Allium christophii

Quick Facts about Allium christophii

Allium christophii, common name Star of Persia or Persian onion. Perhaps they have dropped the religious ‘h’  to become Allium cristophii as a nod to the Iranian roots.

Three Quick Facts about Allium christophii

  1. The clusters of ‘stary’ flowers look good in a vase, dry beautifully and hold their form for years.
  2. This allium is attractive to butterflies but not pests.
  3. Grow your own Allium christophii, by collecting seed sowing them when just ripe or  remove offsets in autumn. You get three seed capsules from each star flower.

 

Storage Rot of Tubers and Bulbs

Storage Rot of Tubers and Bulbs

Bulbs that are stored over winter can be susceptible to rot and fungus. To avoid problems check them regularly and remove and destroy any that are effected.

Ornamental bulbs, tubers and corms that may be affected include begonias, gladioli, tulips and dahlias. Edible crops that can be affected include potatoes, onions and garlic. You will know about rot when you smell some of these .

Onion Rots Ontario Ministry of Agriculture, Food & Rural Affairs

Types of Bulb Rot

  • Damp conditions help grey  botrytis or blue/green penicillium fungal rots.
  • Damaged items allow bacteria to enter the bulb and grow.
  • Post-harvest rots are also caused by fungi and bacteria from the soil or from infections in rotting leaves prior to harvesting.
  • Species specific fungal attacks can cause gladioli core rot, tulip fire, onion neck rot and others.

Storage Tips

  • Harvest carefully, damaged goods rot quickest.
  • Clean off soil and  dry off excess moisture. I then wrap some bulbs in newspaper.
  • Look for signs of black seed-like sclerotia of botrytis.
  • Discard any with signs of soft soggy tissue.
  • Store in dry cool conditions on clean storage trays. Leave space so bulbs do not touch and spread any disease.
  • Dust with a sulphur based inhibitor.

Sack rot and cart it off but not to your compost heap!

Courgette Fruit Problems

Courgette Fruit Problems

Courgettes

Curcurbits are members of the 965 species gourd family that includes Marrows (Courgettes), Cucumber, Melon, Pumpkin and Squash.  

Courgette Fruiting

Plants produce both male and female flowers. The male flowers grow on a thin erect stem. Female flowers are recognisable because they contain an ovary within a swelling behind the yellow flower. Male flowers grow above the vine with a central stamen containing pollen with which to fertilise the female.

The fruit grows behind the pollinated femail flower eventually sheding the petals. Left to grow the courgette will continue into a marrow sized fruit. Some small varities have now been bred to produce small fruit.

 What can go wrong:

  1. Male flower production will be favoured by low temperatures and or excessive shade. Give plants enough space. Choose a warm sunny position.
  2. At the start of flowering often only male flowers grow. As days lengthen both flowers should be formed.
  3. Fruit only swelling at the neck near the top indicates incomplete pollination due to cold or lack of insect visits. Remove these fruit to avoid end rot and shriveling.
  4. Too many fruit on a plant will encourage shriveling and rotting of fruitletes. Remove all useable fruit as soon as possible.
  5. Fruit allowed to grow to maturity as marrows will switch off the cropping as the reproduction is done.

Pollinating Tips

  • Encourage insects to help move the mature pollen. Avoid insecticides.
  • Wind can help pollination but the flower petals are more designed for insects making a funnel shape .
  • In a greenhouse or cold frame the gardener can remove a male flower and manually transfer the pollen from male to female by tapping the male flower above the ovary.
  • Do not pick male flowers  for hand pollination until the pollen is mature.
Photography Tips For Gardeners

Photography Tips For Gardeners

Think before you Click

  • It may seem obvious but think why you are taking a photo in the first place. Is it a documentary record, a social occasion, a personal pleasure or a potential item for publication and wider use.
  • Plan your viewpoint and composition using important features and eliminating unwanted items. Framing subjects and using items, even those behind you, may improve the image.
  • Do not be tempted to cram in too much detail that causes conflict or unneeded complexity.
  • Think about texture, shape, patterns and perspective in addition to the all important colour.
  • Check the light and how various shadows will fall. My shadow features in too many photographs

Close up Tips

  • Getting close and personal can reveal details of plants not normally inspected such as shapes patterns and colour contrasts. Small sections of a bigger subject can be very interesting.
  • It may be necessary to use a tripod to keep the camera still
  • Also consider wind breaks as shelter or supporting methods to hold plants still.
  • Macro facilities on a digital camera or extension tubes on SLR’s help get really close.
  • Use small apertures to get a depth of field. Hold the camera parallel to the most important feature of the photograph.
  • Take several shots and be patient

Other Gardeners Photo Tips

  • Use low view points.
  • Highlight contrasting colours
  • Try   unusual compositions and repetitions repeatedly.
  • Droplets of water on flowers may improve and freshen up the image. Spray drops of glycerine if you are very keen.
  • I need to practice what I preach by keeping a record of what, where and when an image was taken and published.

 

 

 

National Garden Scheme Raises £2.7m

National Garden Scheme Raises £2.7m

In 2016 the National Garden scheme donated £2.7 million to a range of cancer and other charities. This furthers the charitable objectives of the society ‘supporting charities, in their work in the provision of nursing and caring, and

  • the relief of sickness and the preservation and promotion of health;
  • supporting the queen’s nursing institute in its work.
  • assisting such charities or charitable purposes as the trustees shall think fit;’

Looking at the Yorkshire programme for 2017 I forecast an increase in these donations despite the economy and dare I say it the weather.

These Iris were in fine fettle at Creskeld Hall in Wharfedale at the end of May for their open day in aid of NGS. Renown for the Rhododendrons and Azaleas the 3½ acre garden did not disappoint.

Get your local Yellow Book the guide to open gardens and visit some open gardens and help this charity help so many other worthwhile charities.

Sowing Vegetable Seed in Summer

Sowing Vegetable Seed in Summer

Late Sown Peas

Reasons for Summer Seed Sowing

  • If you want a regular supply of salad crops and continuity of fresh vegetables then sow through summer.
  • Some crop failures can be retrieved by a summer sowing.
  • Some crops prefer a late sowing. Runner beans soon catch up if sown now.
  • Summer sowing lengthens the harvesting period and late sowings come into their own as early sowing begin to peak.

Tips for Summer Sowing

  • Salad, carrots , radish and cut and come again crops are suited to direct sowing.
  • Increase the organic matter in your soil during autumn to increase the water retention ability.
  • Water your weed free seed bed a couple of days before sowing to increase the moisture level to a depth of at least 2″.
  • In very dry conditions water a deep drill before sowing and leave a U shape furrow to focus more water to the seedlings
  • A fine tilth and firming down will help the seed make good contact with the moist soil.
  • If the soil is prone to forming a crust cover seeds with proprietary compost rather than garden soil.
  • Covering new seed drills with fleece or newspaper reduces evaporation as would any temporary shading.
  • A tip for lettuce germination is to sow in the afternoon – lettuce need a cool period to germinate.

Look after your summer sown children – Do not go on holiday – ‘do not collect £200 for passing go.’

Summer Pond Care

Summer Pond Care

Summer is another tough season for small garden ponds. The warmer weather can spoil the balance between the amount of vegetation and the levels of sunlight.

Pond Weed

Observations and Summer Tasks

  • Aquatic plants help maintain a balanced pool free from algea in summer.
  • Free floating plants reduce the amount of sun reaching the depths and keep the water cooler. Gently place new plants on the surface.
  • Maintain 50% of the water surface clear of vegetation thinning when necessary.
  • Deep water aquatic plants with floating leaves like water lilies benefit from regular dividing.
  • Submerged oxygenating plants are vital to pool hygiene 5-20 stems per square yard of surface is needed.
  • Excessive plant growth replaces oxygen with carbon dioxide at night potentially causing fish to die.
  • Thin out and avoid invasive species such as Mtriophllum acquaticum.
  • Good housekeeping involves topping up water levels and removing dead and rotting vegetation.

Thorpe Perrow Lake

Summer Pruning Lavender

Summer Pruning Lavender

bee lavender

Lavender will not sprout willingly from old wood. So when pruning make certain some green wood remains. Lavenders bloom on the stems that grew that year. Pruning is designed to encourage more flowering branches and give plants a longer life.

  Lavender Pruning Tips

  • Lavender angustifoila (English Lavender) should be pruned every year.
  • Keep the plants tight, shapely and compact
  • Remove flower stalks after flowering
  • Prune an an inch or so of this years growth and a third of the older bushes without cutting into older leafless wood.
  • Late summer is an ideal time to prune English Lavender.
  • Less hardy varieties Lavender stoechas (Spanish Lavender,  French Lavender) and intermedia Lavendin should be trimmed immediately after flowering and if necessary again in autumn.
  • Start gentle pruning when the plants are young and be heavier on older plants.
  • Pruning in spring can delay flowering.

Lavender can make a neat informal hedge but follow a good pruning regime. Trim twice a year to maintain shape and general performance.

Biennial Apple Trees

Biennial Apple Trees

An apple a day is not possible if you only get an apple every other year and that is the fate of some trees. Biennial bearing or a high crop followed by virtually no crop is not the sort of apple production a gardener needs.

Causes of Erratic Fruiting

  • Some types of apple cultivars are more prone than others to fruiting only in alternative years. Beauty of Bath and Laxton’s Superb naturally tend to fruit biennally.
  • Trees can be tipped into biennial mode by frost when no pollination takes place.
  • No crop, high crop, no crop becomes learnt behaviour
  • Heavy crop during an on year depletes the resources and the tree takes a rest or year out
  • Keeping too much old wood reduces new wood and can lead to biennial bearing.
  • Cropping patterns are internally regulated by the tree.

Solutions to Erratic Apple Bearing

  • Select varieties and pollinators with care.
  • Thin out the flower clusters leaving only 10% of the flowers to shock the tree and modify its behaviour. It may take several seasons.
  • Water your trees and look after them during both years.

Other Comments

  • Apple trees  initiate flower buds for next season’s crop in the current season.
  • An alternation of large and small crops can be caused by competition between the current season’s crop and the coming season’s flower buds.
  • Seed-produced hormones from the developing ovules have an inhibitory effect on flower development. Apple may be prone to this floral inhibition.