Lesser periwinkle: blue flowers open above thin green stems

Your care table

Blue flowers and two directions of growth

Lesser periwinkle forms a low green stand with thin stems reaching far sideways. Small oval leaves sit in pairs, with smooth edges and glossy surfaces. Flowering young stems rise slightly. Simple blue to blue-violet flowers have five slightly twisted-looking lobes and a small pale centre. Vinca minor is the botanical species under which the current selection is offered. Main flowering is in spring; occasional later flowers are possible. A dense green carpet may remain in deep shade while producing fewer flowers there.

Stems are longer than the small root space

The current selection includes single plants and sets of six or twelve, each in a 9 cm pot. Stated approximate total height of 10–25 cm includes the pot. Individual stems may extend significantly beyond it sideways. The clean original view shows this young structure with a few long stems and one flower. This state is an example, not a promise of flowers at delivery. Gently untangle stems after unpacking and check the rootball. Hold root soil when unpotting. A fine stem must not serve as a handle for the weight of soil. Only in the garden do new roots explore a larger area.

Assess shade and soil moisture separately

Partial shade and shade work well. Sun is also possible with sufficient moisture. Under woody plants their roots may strongly dry soil while air stays pleasantly cool. Humus-rich permeable soil with sufficient moisture makes starting easier. A continuously wet place is unsuitable. Observe the site through the day and check how much rain reaches it too. Sunny wind-exposed winter sites may affect evergreen leaves more. More light may improve the flower display; a suitable root zone matters just as much as brightness.

A continuous area develops gradually

The shop suggests approximately 25–30 cm spacing for groups. Lay out pots first, keeping path edges, neighbours and watering places accessible. Extra-deep planting does not close young gaps. Slowly moisten a dry rootball and set at its previous height in frost-free workable soil. Spring and early autumn make starting easier when there is neither strong heat nor constant wetness. Water well, bring soil into contact and lay long stems loosely. Before a dense area forms, watch unwanted plants between young specimens. Remove their roots carefully without pulling out fine periwinkle stems.

Check water at the rootball, not just beside it

During early establishment, check directly at the former pot position. If the rootball dries, slowly water thoroughly. Moist soil farther beside it does not reliably show supply inside. An older rooted stand withstands temporarily drier spells better. Long drought may still affect leaves, growth and flowers. Reduced later watering needs do not mean a maintenance-free area. In good humus-rich garden soil, feed sparingly as needed. For weak growth, check root competition, moisture and plant condition first. An outdoor container’s water supply remains limited; inspect regularly and avoid standing water.

Manage edges early and follow rooted stems

Lateral stems may root in soil and expand the stand. Where they leave the intended area, follow them to those roots and completely remove unwanted parts. Cutting the connection alone does not remove an already rooted segment. Watch small neighbouring perennials especially. Selectively thin very dense old areas; fresh stems may then become more visible. For a flower display, do not indiscriminately remove all healthy young stems. Healthy rooted parts can fill gaps. Such new planting again needs careful moisture care until new roots establish contact.

Watch evergreen stands in winter too

Leaves remain visible for many months, although individual old ones are replaced. Winter sun, dry wind and frozen soil may strain leaves. Give outdoor containers shelter with free drainage. Check moisture in frost-free weather; do not add water to frozen soil. Inspect larger brown or suddenly wilting areas together with stem bases and roots. Especially in continually wet soil, extra watering is no suitable first response. Selectively remove diseased or dead parts and seek specialist assessment if damage progresses. Wear gloves for planting and cutting; plant parts are not food.

One plant, several views

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