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When to plant potatoes for Christmas is a question many gardeners ask once autumn rolls around.
The answer is that you need to plant them in late summer, usually from August to early September, depending on your local climate.
If you’ve been wondering when to plant potatoes for Christmas dinner, this timing gives you a beautiful harvest of fresh spuds right in time for the festive season.
Getting the timing right is the secret to pulling off a successful Christmas potato crop.
In this post, we’ll cover exactly when to plant potatoes for Christmas, which varieties work best, and how to care for them so you’re not left with mushy or stunted tubers.
Let’s dig in.
When to Plant Potatoes for Christmas: The Perfect Timing Window
The ideal time to plant potatoes for Christmas is about 90 to 110 days before you intend to harvest them.
For most of the UK and similar temperate climates, this means planting potatoes in mid-August.
In warmer areas, you can push planting to early September and still make it.
For colder regions, aim for the very start of August.
The general rule of thumb for knowing when to plant potatoes for Christmas is to count backward from your desired harvest date.
If you want fresh potatoes on December 25th, planting in the third week of August is your sweet spot.
This isn’t a precise science, but it’s a reliable framework that has worked for generations of gardeners.
1. Why Late Summer Planting Works
When you plant potatoes for Christmas, the tubers need enough time to develop before the soil gets too cold.
Late August typically offers soil temperatures that are still warm enough for sprouting.
Potatoes grow best when the soil is between 50°F and 70°F.
If you plant too early in July, the heat can stress the young plants and you might get a poor yield.
If you plant too late in October, the chill will halt growth entirely.
So the perfect balance for Christmas potatoes is planting in the late summer window.
2. Frost and Your Planting Date
Frost is your biggest enemy when you’re figuring out when to plant potatoes for Christmas.
Early autumn frosts can kill the foliage above ground.
But here’s the good news: the tubers underground are often still fine.
That said, if a hard frost hits right after planting, the developing sprouts can be damaged.
To protect your crop, you can cover the emerging plants with fleece on cold nights.
This is why many gardeners note that the best time to plant potatoes for Christmas is late August, which gives you a buffer before the first frosts typically arrive.
Choosing the Right Potato Varieties for Christmas Harvest
Not every potato is suited for a Christmas harvest.
You need what’re called “second cropping” potatoes.
These are specially bred varieties that don’t require a long dormancy period.
When you plant potatoes for Christmas, look for varieties like Charlotte, Maris Peer, or Nicola.
These are salad-type potatoes with a waxy texture, perfect for boiled or roasted Christmas sides.
You won’t want to use regular maincrop potatoes from the grocery store.
Those often haven’t been treated for second cropping and may not sprout properly.
So when you’re planning when to plant potatoes for Christmas, always source certified seed potatoes specifically labeled for Christmas cropping.
1. Chitting Your Second Crop Potatoes
To get a head start, you can chit your potatoes before planting.
Chitting means letting them sprout in a cool, bright spot for a couple of weeks before they go into the ground.
This gives them a jumpstart so they can establish roots faster.
It’s especially helpful if you’re cutting it close on the calendar for when to plant potatoes for Christmas.
Just place them in an egg carton with the eyes facing up.
Within 2-3 weeks, you’ll see sturdy green sprouts ready for planting.
2. Where to Get Christmas Seed Potatoes
Many garden centers stock these special seed potatoes in July and August.
If you wait too long, you might miss the window entirely.
Online seed suppliers also offer them, often with fast shipping.
When you’re tracking when to plant potatoes for Christmas, order your seed potatoes early.
That way they arrive in time for your planting date.
Don’t fall for the temptation to use leftover supermarket potatoes.
You’ll rarely get good results, and you risk introducing disease to your soil.
Step-by-Step Guide to Planting for a Christmas Crop
Once you’ve figured out when to plant potatoes for Christmas, the planting itself is straightforward.
Here’s exactly how to do it.
1. Prepare the Soil in Advance
Choose a sunny spot with well-draining soil.
Dig in plenty of well-rotted compost or manure about a week before planting.
Potatoes prefer a slightly acidic soil, around a pH of 5.5 to 6.5.
If you’re planting in containers or bags, use a good quality multipurpose compost mixed with some garden soil.
Preparing the soil early means it’s ready for your chosen planting date.
2. Plant the Sprouted Potatoes
Dig a trench about 4 to 6 inches deep.
Space your seed potatoes about 12 inches apart.
If you’re planting multiple rows, space the rows about 18 inches apart.
Place each potato with the sprouts facing up.
Cover them gently with soil.
Water well after planting to settle the soil around the tubers.
This gives them the moisture they need to start growing right away.
3. Water Consistently
A consistent watering schedule is critical, especially if you’re planting in August when the weather can still be warm.
Potatoes need about 1 to 2 inches of water per week.
Don’t let the soil dry out completely, as this leads to knobbly, misshapen tubers.
Conversely, don’t waterlog them either, because that can cause rot.
So, while you’re working out when to plant potatoes for Christmas, also plan for regular watering for the next 3 months.
4. Mound Up the Soil as They Grow
When the plants are about 8 inches tall, mound soil up around the stems.
This is called “earthing up”.
It keeps the developing tubers covered, which prevents them from turning green.
Green potatoes are toxic due to solanine, so you want to avoid that at all costs.
You’ll need to do this 2-3 times during the growing season.
This simple step ensures the potatoes form clean, healthy tubers beneath the soil.
Caring for Christmas Potatoes into Autumn
Your planting date is set, and now you need to care for the crop through October and November.
As daylight hours shrink, growth naturally slows.
Don’t be alarmed if your plants don’t look enormous.
That’s completely normal for a Christmas crop.
1. Protection from Cold and Frost
As mentioned, late autumn frosts are a real risk.
You can protect your potato plants by covering them with horticultural fleece overnight.
If you’re growing in containers, simply move them into a greenhouse or against a warm wall.
For in-ground crops, a thick layer of straw mulch can insulate the soil.
This extra care is what makes the difference between a great harvest and a disappointing one.
2. Watch for Pests and Diseases
Slugs are a particular nuisance for autumn potatoes.
Keep the area free of weeds and debris where slugs might hide.
You can use organic slug pellets or beer traps.
Also keep an eye out for potato blight, which thrives in cool, damp conditions.
If you see brown spots on the leaves, remove the affected foliage immediately.
Good airflow and proper spacing help prevent blight from taking hold.
3. When to Harvest for Christmas Dinner
You can start harvesting “new potatoes” about 10 weeks after planting.
But for a full Christmas harvest, wait about 12-14 weeks.
By mid-December, the foliage will have died back.
Simply dig up the tubers on a dry day.
You’ll find that fresh, waxy potatoes are absolutely perfect for roasting or boiling.
These potatoes taste far superior to anything you’ll buy in a supermarket.
You can store them in a cool, dark, dry place after harvesting if you don’t use them all immediately.
So, When to Plant Potatoes for Christmas?
You plant potatoes for Christmas in late August or early September.
This timing allows the tubers to develop fully before the cold sets in.
If you’ve been asking yourself when to plant potatoes for Christmas, the answer has everything to do with counting backward from your harvest date.
Use the 90-110 day rule, pick certified second-crop varieties, and protect your plants from frost.
With these steps, you’ll be serving up homegrown spuds right alongside your Christmas turkey.
Happy planting!