Beauty of the Night: Mirabilis jalapa transforms the garden in 60 days

Anyone wanting to bring quick colour to the garden in spring often encounters the same issue: many perennials take years to make a real impact. One particular night flower removes that wait. It grows at speed, flowers until late in the season and looks its finest just as many working people finally reach the patio.

The ‘Beauty of the Night’: what makes this plant so special

The plant in question is the so-called ‘Beauty of the Night’ (Mirabilis jalapa). Originally from South America, it is generally grown here as a fast-growing perennial. Botanically, it forms bushy clumps measuring between 40 and 80 centimetres tall. Soft green foliage grows from sturdy, branching stems.

Its flowers are the captivating feature: the trumpet-shaped blooms do not open until late afternoon, when they release a strong fragrance, before closing again in the morning. Colours range from white and yellow to pink, red and rich violet. Flowers may be plain, speckled or even multicoloured on the very same plant.

“Anyone who sows or plants in spring can find themselves looking at a completely transformed flowerbed in the evening after around 60 days.”

This combination of rapid growth, an extended flowering period and its twilight display makes Mirabilis jalapa particularly appealing to hobby gardeners with limited time who still want noticeable results.

Why this night flower takes off in just 60 days

The Beauty of the Night is regarded as a classic fast starter. The first seedlings emerge from seed within seven to ten days. Given suitable conditions, plants then grow at an impressive pace. On average, around two months pass between germination and the first flowers.

Flowering begins towards the end of spring and continues until the first harder frosts. In milder areas, the display often lasts into October. Anyone who enjoys spending evenings on the balcony or patio can therefore benefit from fragrance and colour for months.

Ideal for overlooked spots and ‘after-work gardens’

As its flowers open when daylight starts to fade, this plant is ideally suited to places used mainly in the evening, including seating areas, patio edges, beds near windows and path borders.

• It rapidly fills gaps in established perennial borders.
• It adds colourful highlights in front of darker hedges or walls.
• It works especially well in scented gardens and alongside evening-fragrant plants such as night-scented stock or stocks.

This species comes into its own particularly well in smaller gardens that are enjoyed mostly after work.

How to sow in spring successfully

For a strong start, timing is particularly important. You can either raise plants indoors or sow directly into the border once hard frosts are no longer expected and the soil has warmed up.

Step by step to sturdy plants

• Soak the seeds in water overnight to allow their hard coating to swell.
• Fill small pots or modular trays with a loose, free-draining growing medium.
• Place one seed in each pot at a depth of around 1.5 centimetres, then water lightly.
• Keep them warm, at about 18 to 20 °C, and evenly moist without making the compost waterlogged.
• Once seedlings have emerged, continue growing them in a bright but not fully sunny place until the young plants are robust.

For direct sowing in the border, follow much the same method, but leave sufficient space between sowing points because the plants spread well later on. In exposed areas, starting them indoors is worthwhile, so that the 60 days of growth do not extend too far into summer.

Site, soil and watering: conditions the Beauty of the Night prefers

This plant thrives on warmth and light. A sunny position receiving at least six hours of direct sun each day produces the fullest flowering. Partial shade is possible, but often results in fewer blooms and looser growth.

Factor	Recommendation
Position	Full sun to, at most, bright partial shade
Soil	Nutrient-rich, loose and free-draining, with no waterlogging
Water	Around 2.5 cm of rainfall or watering per week
Feeding	A light initial feed; feed again later only in very poor soil

In pots and window boxes, containers should be 30 to 40 centimetres deep so the vigorous roots and tubers have enough room. A drainage layer of expanded clay or gravel prevents waterlogged roots. A blend of garden soil and standard multipurpose compost is suitable as a growing medium.

Easy to care for, yet vigorous: keeping the plant under control

In everyday growing, Mirabilis jalapa proves remarkably tough. It copes fairly well with heat and brief dry spells, provided the soil does not dry out completely. Diseases are uncommon, and slugs are usually not very interested in its firm leaves.

“The Beauty of the Night grows readily and happily self-seeds – which is useful, but can become too much without control.”

To avoid volunteer seedlings appearing throughout the border, regularly remove some faded flowerheads. This substantially reduces the number of seeds without making the plant look weakened.

Overwintering: how to keep it genuinely perennial

In mild regions with only light frosts, the tuberous roots can remain in the ground. The plant will then simply shoot again the following year. In places with harsh winters, a different approach is recommended:

• Before the first hard frosts, cut the shoots back to a few centimetres.
• Carefully lift the tubers and remove most of the soil.
• Store them dry and cool in a box filled with sand or sawdust.
• Replant in spring once the danger of frost has passed.

Anyone who would rather avoid this work can simply sow the species again each year. Its rapid development still gives the garden a lush appearance in the very first summer.

Take care around children and pets: toxic plant parts

For all its advantages, the Beauty of the Night has a less straightforward side: every part of the plant is considered toxic, particularly the tubers. In gardens with young children or inquisitive dogs and cats, it is therefore better placed where it will not constantly be played around or nibbled.

For extra reassurance, mark the area or grow it with other, distinctly taller plants that make access a little more difficult. It can be used without issue in purely ornamental areas where children do not play.

Attractive combinations and practical garden tips

Visually, Mirabilis jalapa is most striking when planted in groups. Three to five plants in a larger container or along the edge of a border create a dense ribbon of colour. It is particularly effective alongside:

• ornamental grasses that sway gently in the evening breeze,
• low-growing bedding perennials such as calendulas or zinnias,
• fragrant summer flowers such as heliotrope or sweet alyssum.

To make the most of its scent, position plants near windows or entrances. The evening fragrance can then drift directly indoors or welcome visitors at the door. In front gardens, the night flower also attracts moths, something many nature lovers appreciate.

For people short on time, this species offers a kind of ‘turbo upgrade’ for plain gardens. A few packets of seed, a sunny border and some water are enough to bring about a noticeable change within one season. Those who enjoy experimenting can specifically seek out varieties with speckled or multicoloured flowers – hardly any two blooms look alike, giving each planting a subtly surprising character.