The Healthy Lawn Program Annual Maintenance Calendar
And What You Should Be Doing Right Now (Wellington Edition)
If you want a lush, green, healthy lawn year-round, timing is everything. Many Wellington homeowners water when it’s dry, spray weeds when they see them, or throw down fertiliser whenever it’s on sale. But the best lawn results come from working with the seasons, not against them.
That’s why we created this localised lawn care calendar—a month-by-month guide tailored specifically to Wellington’s weather, soil types, and grass varieties (like Tall Fescue and Play Lawn). We’ll cover fertilising, weed control, pest treatments, moss management, and when to seed or renovate.
🌱 JANUARY – Summer Boost
Apply: Instant fertiliser + weed spray
Why: Nutrients are needed to maintain colour through summer. Weeds thrive in dry soil—get them early.
Water: Deep watering once or twice a week if there’s no rain.
Mow: Slightly higher to reduce stress and protect roots.
🌱 FEBRUARY – Feeding + Weed Management
Apply: Repeat fertiliser + weed spray
Why: Lawns are still active but stressed from heat. Weed control now stops autumn spread.
Tip: Avoid watering in the evening—damp overnight conditions encourage disease.
🍂 MARCH – Grass Grub Prevention
Apply: Grass grub treatment + slow-release fertiliser + weed spray
Why: Early autumn is prime time for insect damage. Get ahead of the grub lifecycle.
Check: For chewed roots or brown patches lifting easily.
🍂 APRIL – Autumn Repair
Apply: Instant fertiliser + weed spray
Why: Cool nights and moist soil make this the best time for lawn recovery and overseeding.
Seed: Overseed patchy areas with Tall Fescue.
Mow: Lower slightly to prep for winter growth slowdown.
🍁 MAY – Strengthen for Winter
Apply: Fertiliser + weed spray
Why: Build strong root systems before cold weather. Weeds still germinate this late in the season.
Watch For: Moss starting in shaded or poorly draining areas.
❄️ JUNE – Winter Watch
Apply: Fertiliser + weed spray
Why: Your lawn still needs nutrients in winter, especially in frost-prone areas.
Avoid: Walking on frozen or saturated turf—it compacts the soil and damages roots.
❄️ JULY – Quiet but Important
Apply: Fertiliser + weed spray
Why: Mid-winter still requires low-level feeding. Preventing broadleaf weeds from taking hold now pays off in spring.
Tip: Keep lawn edges tidy to improve appearance while growth is slow.
❄️ AUGUST – Moss & Moisture Management
Apply: Fertiliser + weed spray + moss spray (if needed)
Why: Shady, damp areas may show moss. Treat early before it spreads.
Prep: Inspect drainage and clear gutters to reduce pooling.
🌱 SEPTEMBER – Spring Kick-Off
Apply: Grass grub treatment + slow-release fertiliser + weed spray
Why: Everything wakes up! Grubs return, so preventative treatment is key.
Aerate: Use a garden fork or aerator to relieve compaction.
Overseed: This is prime time for lawn renovation.
🌼 OCTOBER – Growth Surge
Apply: Fertiliser + weed spray
Why: Rapid growth means more demand for nutrients. Target weeds while they’re still small.
Mow: Increase frequency but never remove more than ⅓ of the blade height.
🌼 NOVEMBER – Prep for Summer
Apply: Fertiliser + weed spray
Why: Build up health before summer stress. A strong lawn = fewer weeds.
Water: Early mornings are best. Avoid short daily sprinkles—go deep.
🎄 DECEMBER – Lawn for the Holidays
Apply: Fertiliser + weed spray
Why: Give your lawn a lush look for summer gatherings. Stay on top of colour and density.
Tip: Now’s a great time to re-edge garden borders and add mulch.
🧪 Extra Notes
Grass Grub Treatments: Always applied in March, September & October
Moss Spray: Available in August or upon request
Weed Spraying: Included monthly and applied as needed
Pet & Child Friendly: All sprays are applied by a trained horticulturist using safe, targeted products
Area Covered: Service includes properties up to 100m², with larger lawns priced accordingly
💚 The Easy Way: The Healthy Lawn Program
Don’t want to remember all of this? You don’t have to.
With our Healthy Lawn Program, we visit monthly and do it all for you:
✔️ Fertilising
✔️ Weed Spraying
✔️ Grass Grub Control
✔️ Moss Treatments
✔️ Seasonal Adjustments
✔️ Qualified Horticulturist on every visit
From just $135 + GST/month for lawns up to 100m²
Rolling 12-month plan
Cancel any time with 14 days’ notice
👉 Join the Healthy Lawn Program →
Want Lawn Advice for Your Property?
We offer lawn assessments and honest recommendations—whether you want DIY help or hands-free care.
Call us on 0800 MY LAWN
Email info@justgrassnz.com
Servicing the Greater Wellington, Hutt Valley, and Porirua
