Gardening in Waitaki

Gardening in Waitaki
Weekly garden blog

Tuesday, August 2, 2016

Gardening in North Otago August 2nd 2016

Brrrrr, now because of the snow falls needed by skiers we are getting the frosts and best of all for North Otago we were blessed with another soaking rain this week. Bulbs that shot up during those warmer days will continue to head for an early spring display but the cold temperatures now will hold buds and have a noticeable effect on soft new growth. However rhododendron Christmas cheer and prunus autumnalis are in full flower and the fragrance from winter sweet, witch hazel, Daphne, boronia and violets wafting about our garden make it a joy to work in, cold fingers and all.   
Pruning has started here, as well as humping straw bales and barrows of gravel in readiness for the spring explosion and this is time for me to create and dress the garden by planting out, shifting and feeding. I am liquid feeding annuals and perennials that have been nursed through winter, folia feeding will help all new leaf, budding and flowering plants from now on, roots are starting to take in nutrients to plump up buds. This week I have noticed nice fat buds swelling on the stems of my hydrangeas, I have started pruning the more sheltered bushes but still leaving the more exposed a little longer. Prune only those stems that have flowered, cut at an outward facing bud second bud from the bottom, leave all other stems because these are the flowers for this year. Spread old stable manure around the drip line and once again a reminder, it is a dressing of lime for pink flowers and aluminum sulphate for blue, White never changes, but are best planted in light shade. The use of coffee grinds, grass clippings or pine needles spread around the drip line can help to lower the PH of pink hydrangeas and encourage them into shades of purple. I have found I can pull rooted branches from the base of big old gnarly hydrangea bushes, these take a few years to bush up but it is a sure way to replicate a special variety that. 
While raking out the last of autumns leaves that had blown under shrubs I come across branches from shrubs laid down in soil forming roots, viburnum, choysia, camellia and hydrangeas. Most shrubs growing low to the ground can sometimes drop a branch into the soil and form roots, this can also be purposely done at the beginning of spring by pegging branches down into a hole in the soil, roots should develop at the point covered with soil. Making a small wound on the portion of the stem that is to be buried will help to stimulate root development
Cut the old growth from peony roses now and destroy, disease can winter over on last years stems but be careful not to knock the new pink shoots emerging from the tubers. Cut the old growth from dahlias now as well, if thick and tubular bend the cut stalk over to prevent rain water building up inside which will lead to rot in a tuber.
Remove soil from bearded iris rhizomes, they need to be partially exposed to give the best flowering. 
With roses making a move to bud up they will be taking in food, powdered rose food needs watered in around the drip line, slow release fertiliser will work each time it rains and manure out from the crown. Trees and Roses are still available in Garden Centres, If you think your garden is too small for trees, I have seen dwarf Peach and Nectarine Trees on offer,if you need a tittle tree growing to a width and height of 1.5 metres. to add height in a part of your garden why not have one that blossoms beautifully and then gives you fruit. 
Vegetables: The veg I have in are holding well despite the weather extremes, frosty areas inland can make a start now by adding some compost and a little lime in readiness for when you plant out later this month. 
Fruit: Prune newly planted fruit trees, this is probably the hardest cut you’ll make, but the most important. Cut a new tree at about hip height, do this whether your wanting a vase shape or a single leader. If the main branches start here they’ll be reachable when fully grown. 
Lets hope we don't get too many dull overcast days by the time fruit trees blossom, we need those wonderful bee's to come out and set to work pollinating.

Cheers, Linda

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