Jobs to do in the garden in September – Maintenance, planting and harvesting
The bulk of the summer is behind us, and even this week we have seen the weather change and feel a little cooler – though are gardens will be grateful for the rain. September is almost here are there are a number of jobs that need to be done, from collecting seeds to cutting back foliage.
There is plenty to do in the garden this month to get ahead before the cold, harsh winter months. Here are the jobs you should be doing in the garden in September.
Top gardening jobs for September
- The weather is still suitable for creating and repairing new lawns with turf or seed. But you are running out of time to use lawn weed killers to control perennial weeds such as daises and buttercups.
- You may need to strengthen your lawn for winter by applying an autumn lawn feed which is high in potassium to strengthen the roots. Avoid using old summer feeds as these are high in Nitrogen which at the wrong time of year could encourage lawn diseases.
Lift and divide summer-flowering perennials
Dividing these plants will help to re-energise them, encouraging them to reboot, to grow back next year with more vigour and true to form once more. If any or all of the plants look as though nothing will restore them to their former glory – although one hopes the latter will not be the case – then be ruthless and take them out altogether and replace them with something else.
Trees, shrubs and climbers
Continue to collect seeds
It is best to harvest and store your own seeds in the middle of a sunny day, when moisture levels are at their lowest. Only harvest ripe seeds that look hard and brown. Store them in paper bags or envelopes; label these with the name of the plant and the harvest date, then snip the seed head off and place the whole thing into the envelope. When you are ready to sort, working envelope by envelope, tip the contents onto a tray and gently remove any chaff. Tip the seeds back into the envelope, seal and store in a dry container.
Sow and plant now for colour and healthy plants next spring
To guarantee you have flowering trees and plants in your garden next spring, you need to sow and plant this autumn. Doing the work yourself now, and watching things grow, will not only save you money (buying seed to sow and grow now is far cheaper than buying plants next spring that have been grown by someone else), it will provide you with healthier plants and the pleasure of knowing you have created your spring garden yourself. For inspiration, expert advice, tips look at the RHS website.
Greenhouse and Houseplants
Final job, if you still have the energy
If the weather dries up take advantage of it by painting fences, sheds and other wooden structures with a preservative.