You love the look of plumeria, but your garden is in Britain and the forecast says drizzle. A tropical plant can cope with a UK year if you treat it as a summer patio plant and a winter houseplant. This guide for plumeria UK growers covers the climate, the winter minimum, seasonal care and where to buy.
The short version is simple. Plumeria will not survive outdoors in a British winter, but it grows well in a pot that moves with the seasons. Everything below is built around that routine.
Can you grow plumeria in the UK?
You can, as a container plant. Plumeria is tropical and frost tender, so it cannot stay in a UK garden bed all year. Even mild coastal areas get cold, wet spells that rot stems.
Plumeria UK success comes down to the pot and the calendar.
The Royal Horticultural Society lists frangipani (the usual UK name for plumeria) as an easy plant under glass. It says the plant needs a bright, warm position all year. It recommends winter minimums of 15 C (60 F), and says flowers appear from July to October in the UK.
That 15 C (60 F) figure is stricter than what many growers elsewhere will tell you. Some store dormant plants cooler and dry, and we cover that below. For the plant’s actual cold limits, our guide to plumeria cold hardiness explains the numbers.
Plumeria UK climate: what your summer gives the plant
A plumeria UK climate check starts with the summer, because that is when the plant does its growing. Plumeria wants heat and sun. British summers are shorter and cooler than its home range, and often grey and wet.
Because of that, your best spots are the warmest ones you have:
- A south facing patio or a wall that stores heat and gives it back at night.
- A sunny porch or a spot against a brick wall, out of the wind.
- A conservatory or greenhouse, where the plant gets heat and stays dry.
Move the pot outdoors only when nights stay reliably mild. Growers commonly wait until nights sit above about 10 C (50 F), which is a rule of thumb and not an official figure. Cold nights in May and September are the main danger, so watch the forecast at both ends of the season.
Bring the plant back in at the first run of cool nights, not at the first frost. Our guide on plumeria winter care covers timing and the move in more detail.
A min and max thermometer is cheap and shows what your patio or conservatory really does overnight. The button goes to the US Amazon store, so treat it as a guide to the product type.
Low winter light is the second problem
Cold is only half the story for plumeria UK growers. Winter days in Britain are short, dim and often overcast. A plant kept warm indoors will get far less light than it wants.
Plants that stay leafy can stretch, turn pale and drop leaves in that low light. Dormant plants avoid the problem, because a leafless plant does not need light. That is a main reason many UK growers choose dormancy.
If you do want leaves in winter, a grow light helps. Our page on plumeria light requirements explains how much light the plant needs and how lights fit in.
Overwintering in a conservatory or heated greenhouse
The RHS approach is to keep the plant warm and bright. That means a conservatory, heated greenhouse or bright room, held at 15 C (60 F) or above. The RHS notes that colder conditions can rot the growing tips.
An unheated conservatory is not enough. Glass loses heat fast on clear winter nights. Check the overnight low, not just the daytime reading.
Under glass, the RHS names glasshouse red spider mite as a problem to watch for. Dry, warm air suits these mites, so look under the leaves now and then.
Dormant storage as the cheaper option
Heating a conservatory all winter costs money. Many UK growers let the plant go dormant and store it somewhere dry and frost free, such as a spare room. The RHS suggests a dry, airy rest, much like you would give a cactus.
Sources disagree on how cool is safe. The RHS says 15 C (60 F) as a minimum. Many growers store dormant plants cooler, commonly aiming to stay above about 10 C (50 F), but that is grower practice and not official advice.
Cold plus wet is what kills plants, so keep the soil dry if storage is cool. Our guide to plumeria dormancy explains what a normal leaf drop looks like, so you do not panic when the plant sheds its leaves in autumn.
Watering in a UK winter
The RHS says to water from spring to autumn when the plant is dry. In winter it advises keeping the plant dry, then restarting watering in mid March. It also says not to feed in winter.
Damp compost in a cool, dim room is a recipe for rot. A dormant plant uses almost no water.
When you restart in spring, begin with small amounts and increase as new leaves appear. Our page on plumeria water requirements has the full watering routine.
A simple UK growing calendar
| Period | What to do |
|---|---|
| February to March | Repot if needed. The RHS suggests February or March, into a slightly larger pot every other year. |
| Mid March | Restart watering, small amounts at first. |
| April to August | Feed regularly. The RHS suggests a general purpose liquid feed every 10 to 14 days from April. |
| May to September | Warmest, sunniest spot. Outdoors once nights are reliably mild, or under glass. |
| July to October | Flowering season in the UK, according to the RHS. |
| Late autumn to winter | Bring inside, stop feeding and keep dry or keep warm and bright. |
The RHS also recommends an open, free draining mix, such as peat free John Innes No. 2 with extra grit or sharp sand. Drainage matters more than the exact brand of compost.
Buying plumeria in the UK
Plumeria is not a common sight on garden centre shelves in Britain. Most UK growers buy online. Sources include specialist plant sellers, general online plant retailers and marketplace sellers such as eBay and Etsy.
A few tips apply wherever you buy:
- Check that the seller is based in the UK, which avoids import rules altogether.
- Cuttings cost less than rooted plants but need patience. See how to propagate plumeria.
- Seed is easy to find, but seedlings take longer to flower and will not match the parent.
- Cuttings posted in cold weather can arrive damaged, so ask when the seller ships.
For general advice on judging a seller, see our guide on where to buy plumeria.
Importing plumeria into Great Britain
Buying from a US or Hawaiian seller is where people run into trouble. The rules change, so read the current GOV.UK guidance on importing plants before you order.
The page defines a plant as a living plant or a living part of a plant at any stage of growth. Low risk plants are exempt from plant health controls. For the other risk groups, a phytosanitary certificate is required for each consignment.
The exporting country’s plant health authority issues the certificate. It must be dated no more than 13 days before or after the consignment left that country.
That page covers commercial imports. It does not cover personal imports. It refers readers to separate GOV.UK guidance on bringing plants in for personal use.
We could not verify the personal use rules or the risk category for plumeria. Check both on GOV.UK before you buy from abroad, using the Plant Health Portal for the category.
Many overseas sellers will not ship to the UK. A UK seller is usually simpler.
Common mistakes with plumeria in the UK
- Leaving the pot outside too late in autumn, when cold and damp set in.
- Keeping a dormant plant in damp compost in a cool room.
- Watering on a fixed schedule through winter.
- Expecting flowers from a young cutting in its first British summer. Our guide on how to get plumeria to bloom explains what to expect.
If you keep a plant leafy through winter, a full spectrum LED grow light can make up for some missing daylight. Check the label for coverage and size before you buy.
The Plumerist toolkit
The gear we would buy if we were starting over.
As an Amazon Associate, Plumerist earns from qualifying purchases.
Frequently Asked Questions
Can plumeria survive a UK winter outside?
No. Plumeria is frost tender, and cold, wet weather rots stems and roots. Bring the pot indoors before nights turn cold.
What is the minimum winter temperature for frangipani in the UK?
The RHS advises keeping winter minimums at 15 C (60 F). Some growers store dormant plants cooler, but that is practice rather than official advice.
When does plumeria flower in the UK?
The RHS says flowers appear from July to October in the UK. A plant needs a warm, bright summer and enough maturity to bloom.
Do I need a heated greenhouse for plumeria?
Not necessarily. A heated greenhouse or conservatory keeps the plant growing, but a dormant plant can rest dry in a frost free room instead.
Can I buy plumeria cuttings in the UK?
Yes, mostly online from UK sellers. Buying within the UK avoids the import paperwork described above.