Now that autumn has arrived it’s interesting to reflect on the summer of discontent.
We gardeners have awaited the cooler weather with great eagerness, hoping the summer’s high humidity quickly recedes into the past.
I find I’m greeted with surprise when I refer to the summer as being relatively dry.
The humidity deceived many. Even my own garden hasn’t had the sprinklers turned on.
I’m paying now though.
I have a whole bed of Gardenia Floridas looking pretty sad.
Fungal diseases such as black spot have kept roses battling, although the dry spell of recent weeks has produced excellent blooms – though the leaves have been decimated by grasshoppers, some are too small to see.
Grasshoppers are a real problem as spraying is difficult, once they know you are nearby they quickly fly off, only to return when your back is turned.
I keep a low toxic pyrethrum pressure pack handy so I don’t have to waste time
mixing up product.
Although some gardeners have found the lawn pesties a problem, I haven’t found the normal decimation from army grub.
Keep an eye out as they still could arrive.
Remember whatever solution you used last year, it is time to change.
Fungal disease has been prevalent in grass this summer because of the humidity.
Therefore if you have brown patches, it is wise to check overnight with the wet mat before spraying for army grub.
If you have lawn pests such as black beetle or grub they will emerge during the night under the bag or mat.
I haven’t noticed citrus being attacked as they usually are with citrus leaf miner, which is indicated with curling leaves.
If this does occur, prune off new growth and spray with an appropriate chemical.
By this I mean check carefully to ensure the product is suitable to your particular lemon or orange as Rogor, for example, can cause defoliation if not used correctly.
March is the ideal time to feed citrus – never use citrus fertiliser on potted plants.
Use a slow release product such as Rapid Raiser, Bounceback or Organic X-tra to prevent fertiliser damage.
I have noted fertilizer packaging doesn’t always issue a warning about potted citrus, but trust me it will burn and the leaves will drop off.
Citrus growing in the garden should have poultry manure applied out under the drip line, after the soil is watered.
A couple of weeks later apply citrus fertiliser, again under the drip line not near the trunk, watering before application and after fertilising.
March is here and yes it is now okay to buy cyclamen, although while the humidity lurks care will need to be taken.
Never water the crown and blooms, lift the leaves watering underneath.
If you saved cyclamen corms they should be re-potted and fertilised this month, and then begin to water regularly.
Camellia sasanquas will begin to bloom shortly, whilst japonicas (winter flowering) are setting buds and may need to be disbudded.
This refers to the removal of one or two buds where multiples exist. It allows bigger and better flowers.
This Week:
>> Prepare beds with poultry manure and lime if the soil is acidic, leaving at least one week before planting sweet peas.
>> Trim back hedges and fertilise to encourage growth before winter.
>> Give herbs a kick with Flourish as well as an all-purpose plant food.
>> Apply sulphate of potash to Sasanqua camellias to increase flowering.
>> Re-pot indoor plants, if necessary, before the cold weather arrives.
New release: This month, March, is the ideal time to plant sweet peas, St Patrick’s Day, March 17 being the traditional day for planting.
This year Oasis has released the new Sweet Pea ‘Bubbles’, which has a delicate fragrance.
Bubbles are ideal for growing on low fences, trellises and in containers –
It will look great spilling over rockeries or in hanging baskets.
Sweet peas perform best in a northerly aspect in a well-drained soil.
When flower buds appear apply a soluble fertiliser such as Flourish regularly.