May gardening jobs
May may bring sunshine and warmer days, but don't be lulled into a false sense of security - late frosts can still catch you by surprise. This is a month of transition, where protecting tender plants, hardening off seedlings, and keeping an eye on nighttime temperatures are all essential tasks to keep your garden thriving.
As the days lengthen and soil warms, it's also time to get your garden into full swing. Sow summer-flowering plants, prep vegetable beds, and manage greenhouse temperatures to avoid overheating. Keep an eye out for weeds and pests, which become more active now, and stay on top of regular maintenance to ensure a healthy, flourishing garden in the months ahead.
Watch Out for Late Frosts
It might feel like summer is around the corner, but chilly nights can still bring unexpected frosts in May. These can cause real damage to new shoots, blossoms, and less hardy plants - especially those recently planted or just waking up from winter dormancy.
To protect your plants:
- Choose hardy varieties where possible.
- Position tender species near south-facing walls for added warmth.
- Apply mulch (like compost or bark) around the base of shrubs and perennials to insulate the roots.
- Move container plants to sheltered spots when frost is forecast.
- Keep horticultural fleece or cloches handy for quick protection on cold nights.
A little forward planning now can save you a lot of heartache (and replanting) later.
Avoid Greenhouse Overheating
While you're protecting against frost, don't forget the other extreme - overheating in greenhouses or polytunnels. Glass structures can trap heat fast on sunny days, creating sauna-like conditions that many plants won't tolerate.
Here's how to keep your greenhouse cool:
- Open vents, doors, and windows during the day to allow airflow.
- Use shading such as netting, blinds, or special greenhouse shading paints to diffuse intense sunlight.
- Water paths or floors to increase humidity and cool the air through evaporation.
Balanced ventilation and shade will keep temperatures more stable and your greenhouse plants happy.
Earth Up Your Potatoes
If you've planted early potatoes, now is the time to start "earthing up". This essential job protects young shoots from frost, and more importantly, stops the developing tubers from being exposed to light - preventing them from turning green and inedible.
To earth up:
- Gently mound loose soil or compost around the base of each plant.
- Cover the lower stems and any emerging shoots, leaving just the top leaves exposed.
- Repeat every couple of weeks as the plants grow.
This process not only shields your crop but also encourages stronger roots and more tubers. Just be careful not to snap any stems as you go.
Prep for Summer Bedding Displays
Summer bedding plants are all about colour, texture, and instant impact. May is the perfect time to prepare for planting them out.
Popular bedding plants include:
- Petunias, Begonias, Marigolds - great for sunny spots
- Lobelias, Fuchsias, Impatiens - ideal for shadier areas
You can raise bedding plants from seed or pick up young, ready-to-plant options from garden centres. When choosing varieties, match them to your garden's sun exposure and watering needs. It's also worth considering colour themes to create harmonious displays in pots, borders, and hanging baskets.
Stay on Top of Weeds
With the warmer weather comes a burst of growth - not just from your favourite flowers and veggies, but from weeds too. They can quickly take over if left unchecked.
Try these non-chemical methods:
- Hand-pull or dig out weeds using a hoe, trowel, or hand fork.
- Hoe weed seedlings on dry days - once uprooted, they'll shrivel on the soil surface.
- Use a flame weeder between paving or paths to tackle tough-to-reach spots (carefully, of course - this isn't an action movie!).
Weed control is most effective when done little and often. A few minutes here and there can save hours of weeding later.
Summing up
Whether you're protecting plants from frost, keeping a greenhouse cool, or prepping for a colourful summer display, May is a month of transition in the garden. With a bit of care and planning now, your garden will reward you all season long.
