lupin plant problems

Lupin foliar diseases: diagnosis and management

Brown spot.
Anthracnose.
Phomopsis stem and pod blight.
Cucumber mosaic virus (CMV)
Bean yellow mosaic virus (BYMV)
Sclerotinia stem rot.
Minor foliar diseases.

What is wrong with my lupins?

Lupines are also subject to a variety of fungal diseases, including downy mildew; powdery mildew; basal and root rots; gray mold flower and leaf blights; and rust. Fungal diseases usually show up on the leaves in the form of spots, raised bumps or a powdery film.

What's killing my lupins?

Lupin anthracnose is a fungal disease of the leaves and stems. It is spread from plant to plant by rain-splashed spores, and is therefore particularly damaging in wet weather. ... Anthracnose first became a problem on ornamental lupins in the 1980's, and is now the most damaging disease affecting them.

Should lupins be cut back?

Caring for lupins

Deadhead lupins once flowers have faded and you should be rewarded with a second flush of flowers. In autumn, cut lupins right back to the ground after collecting seed. Lupins are not long-lived plants – expect to replace plants after about six years.

Why are my lupines dying?

Sclerotinia stem rot – White, cotton-like fungus grows around the stem, and parts of the plant above it wither and die. The fungus lives in the soil and mostly affects plants in wet regions. Don't plant lupines in the same spot again for several years after this Sclerotinia stem rot occurs.

Do you deadhead Lupine?

Once established, lupines need consistent moisture to bloom well. ... Deadhead your spent lupine spikes to encourage the plants to continue blooming. This will also prevent unwanted self-seeding, according to Missouri Botanical Garden, which can cause your lupine plants to sprawl and spread where they are not wanted.

Why are my lupins curling?

Why are my lupines curling. The stalks are curling. . . as well as the leaves. There are, however, small flower blooms. Curling is typically caused by a pest of some kind, such as aphids or whiteflies.

How do you revive lupins?

To get the longest flowering period from your lupins, cut off the flower heads when they have died down. The flowers will die from the base of the flower head upwards, the time to dead head them is when two thirds of the flower has died. New, smaller flowers will soon appear extending the flowering season.

How do I get rid of lupins?

Wait until spring to kill the lupine after the foliage fully develops but before plants begin to flower. Alternatively, you can wait until fall when flowers have finished blooming, but before the foliage dies back to the ground. Treat the lupine on a sunny day and after any morning dew dries from the leaves.

Does diluted washing up liquid kill blackfly?

Spray with a weak solution of washing-up liquid and water, as this kills on contact don't forget the undersides of the leaves. ... This also kills the eggs and the larvae so don't forget the undersides of the leaves and in the leaf axils.

Do lupines spread?

Lupines are deep rooted and do not spread except through re-seeding. Seeds will not come true to the original variety planted, but will eventually revert to blue-violet and white.

Are lupins Hardy?

Lupins are one of the quintessential cottage garden plants adding height and majesty to any border. They are hardy, easy to grow and come in a huge range of colours.

Can you take cuttings from lupins?

Propagating lupins

You can take basal cuttings in March and April and these will root easily in a 50% mixture of sharp sand and compost. Plants can also be divided in the spring - but NEVER in the autumn. Autumn division will kill them.

What animal eats Lupine?

Lupins are notoriously susceptible to slugs and snails, which never go further than they have to from their retreat. My guess would be that somewhere near the lupin that is being eaten a snail lurks beneath a flowerpot or a brick.

Do lupins fix nitrogen?

Lupines are decorative as well as useful in a garden because of their ability to fix nitrogen from the air. ... Plants belonging to the Legume family like Lupines are often called a Nitrogen fixer. They can get this element out of the air with the help of symbiotic bacteria that live in nodules on their roots.

How do you take care of Lupine?

CARING FOR LUPINE

After planting lupines, keep the soil evenly moist to ensure good root development. Once your plants are deeply rooted, they can tolerate dryer conditions and will only need water during periods of drought. Applying a layer of mulch will help lock in soil moisture and keep the roots cool.

Do lupines like sun or shade?

Lupines prefer moist, sandy, well-drained soil and cool temperatures. They can succeed on heavier soils, but you really need to loosen the soil for their long taproots. Select a spot in full sun or light shade. Loosen the soil to a depth of about 1 to 1-½ foot.

Do lupines bloom every year?

In general lupines will bloom once, but may produce a second flush of bloom in late summer if cut back after blooming.

What does Lupine smell like?

Lupine, another plant popular with butterflies and bumblebees, is very odorous, smelling sweetly florid and very noticeable while walking through a meadow. ... Bees visit these plants but so do lots of flies.

What pests eat lupins?

Lupin aphid is a sap-sucking insect in the same group of insects as greenfly and blackfly. It feeds on lupins (Lupinus).

What's eating my lupine leaves?

The first year I tried to grow lupins, I carefully raised a few from seed, and planted them in the garden. Very quickly – literally within a couple of days, they were eaten, and sure enough I found the culprits – slugs and snails among the remains of the leaves.

Where do lupins originate from?

The Russell lupin, Lupinus polyphyllus, hailing from North America, and used in a hybridisation program that subsequently gave it increased vigour, is such a mild-mannered and quintessential cottage garden plant here in the UK and a complete thug in New Zealand.