March Planting Guide for a Thriving Spring Garden
March is when things finally start moving again in the garden. The days are getting longer, there’s a bit more warmth in the air, and you can almost hear the plants getting ready to wake up.
However, before you rush out and fill every empty space, it’s worth knowing what actually works well in March – especially here in Lincolnshire, where the weather can still throw in the odd surprise frost just to keep things interesting.
So, if you’re wondering what to plant this month, here’s a straightforward guide to help you get it right, first time.
What Can You Plant in March in the UK? (Quick Answer)
In March, you can plant hardy perennials, shrubs, trees, summer-flowering bulbs, and early vegetables.
In addition, you can start seeds indoors for more tender plants while the risk of frost is still around.
The key is choosing plants that can handle cooler temperatures while the soil begins to warm up.
Why Is March a Good Time to Start Planting?
March sits right on the edge of the growing season.
On the one hand, the soil is starting to warm, which helps roots establish. On the other hand, plants aren’t yet under pressure from heat or drought.
As a result, anything you plant now has time to settle in properly before the busy growing months arrive.
Start with Your Soil (Before You Plant Anything)
Before planting anything, it’s worth checking what you’re working with.
For example, Lincolnshire gardens often have heavier clay soil, which can hold water longer than you’d like.
So, before planting:
- Add compost or organic matter
- Break up compacted areas (if not too wet)
- Avoid working soil that sticks to your boots
If you’re unsure about soil types, you can find helpful advice from the RHS here: Soil care – mulching and composting / RHS Gardening / RHS
Which Flowers Can You Plant in March?
If you’re keen to get some colour going, March gives you a solid starting point.
Hardy Perennials (Best Choice for Long-Term Results)
These are reliable and come back year after year:
- Geranium (hardy varieties)
- Salvia
- Echinacea
- Verbena bonariensis
- Coreopsis
Because they establish early, they tend to perform better through summer.
Spring Bedding and Early Colour
If you want something more immediate:
- Pansies
- Violas
- Primroses
These are great for pots, borders, and adding a quick lift near patios or entrances.
What Shrubs and Trees Can You Plant in March?
March is still a good time to plant shrubs and trees before the growing season kicks in fully.
Good options include:
- Lavender (for sunny spots)
- Hydrangea (sheltered areas)
- Spirea
- Hebe
- Choisya
In addition, bare-root hedging (like beech or hawthorn) can still go in early in the month.
Planting now means stronger root systems and less watering later on.
Can You Plant Bulbs in March?
Yes – just not spring bulbs (those should have gone in autumn).
However, March is perfect for summer-flowering bulbs, such as:
- Alliums
- Lilies
- Gladioli
- Dahlias (towards the end of the month)
These give your garden colour later in the year, so it’s worth planning ahead.
What Vegetables and Herbs Can You Start?
If you like growing your own, March is when things begin to pick up.
Vegetables to Sow Outdoors
- Carrots
- Spinach
- Beetroot
- Peas
Start Indoors
- Tomatoes
- Courgettes
- Chillies
- Herbs
- Parsley
- Chives
- Mint
Should You Use Containers in March?
Yes. And they’re often the easiest way to get started.
Containers warm up faster than the ground, which means plants establish more quickly.
Use them for:
- Early flowers
- Herbs
- Small shrubs
They’re also ideal for patios and smaller gardens.
If space is limited, you may find this useful: Transforming Small Spaces Creative Landscaping for Tiny Gardens and Balconies.
How Do You Avoid Common March Planting Mistakes?
March is a great month, but it’s easy to get caught out.
Common mistakes include:
- Planting too early before a cold snap
- Overwatering heavy soil
- Choosing plants that don’t suit the space
- Trying to do everything at once
Instead, take it steady. Watch the weather, and build things up gradually.
How Can Landscaping Improve Your Planting Results?
Planting works best when the garden layout supports it.
For example:
- Raised beds improve drainage
- Defined borders keep planting organised
- Proper paving prevents soil being walked into planting areas
If your garden feels awkward to plant in, it may be worth rethinking the layout.
ALS Landscaping Lincoln can help design spaces that work with planting rather than against it.
You can also learn more about the process here.
Conclusion
March is the start of something. Not quite full spring, but close enough to get going properly.
By choosing the right plants, preparing your soil, and not rushing ahead of the weather, you can set your garden up for a strong, healthy growing season.
In short, a bit of thought now saves a lot of effort later – and gives you a garden that actually thrives rather than just survives.
FAQs
Can I plant in March if frost is still expected?
Yes, but stick to hardy plants and protect anything vulnerable if a frost is forecast.
Is March too early for planting flowers?
No. Many hardy flowers do well when planted in March.
Should I water plants in March?
Only when needed. The soil often holds plenty of moisture at this time of year.