In the case of vegetables grown for their leaves, like spinach, lettuce, chard and beet greens, leafminers can mean the total loss of a crop. The drum-head primula is easy to grow on most garden soils but likes a little moisture and humus. Messages: 21 Likes Received: 0 Location: Ontario, Canada. It is essential to preventing primula disease problems to select a site with excellent drainage, since the primula roots can be damaged in winter when soil is wet or heavy. When the centre falls out, holes appear. Old leaves die while younger leaves yellow. Look beneath the leaves and there may also be white fungal growth. They feed on the underside of leaves and like tender plant tissue. However, they tend to be shy flowering after their first year, so this display was very welcome. Primula Romance. Photo about Macro detail of Primula flower. The plants form a foliage rosette 20 to 40cm (8-16 inch) high and 30cm (1 feet) wide; soft, pale green, oval, 4 to 8cm (1.5 – 3 inch) long leaves, with lobed and cut edges are carried on long stalks. Holes in leaves Mango scab Leaves are distorted only when the disease affects fresh growth. You can grow the Gold-Laced Primrose in zones 5 through 8. B3 Posts: 14,758. Technically a perennial they are grown as annuals across Australia except in the colder regions. Little Rock families concerned after shootout leaves bullets holes in apartments Local News. April 2017. Sometimes you can also stop adults from laying eggs on the plants by placing gravel around them. Primroses do best in your garden if you plant them in a cool section that offers the plants lots of bright light. Spores carried by water and wind spread this fungus, which leaves primula foliage peppered with holes. This is the damage of the bean leaf beetles. Insects very often feed on leaves and foliage, leaving behind feeding holes on different parts of the tree's anatomy. The most common of these is the slug, a shell-less crustacean that lives in cool organic debris during the day but slithers up stalks and munches on the undersides of leaves between and across leaf veins. Proper planting and culture can prevent many primula plant problems, but it is a good idea to become familiar with some of the diseases and pests of primula. Discard infected plants. When infection is heavy, entire leaves may brown. From the team at Gardeners' World Magazine. When the centres fall out, the leaf ends up peppered with holes. Sometimes the leaves on Primula can get a bit discoloured, brown at the edges and removing these will do no harm, (provided it is only a few not too many as the plant needs leaves for photosynthesis,) and also dead heading will help to keep the plant flowering. Look for signs of wilting. They are sneaky, hide really well and appear, it seems, out of nowhere. Fortunately, these insects vary from year to year in their abundance so fewer may be seen next year which will mean less damage. These bright flowering plants are also called Primula, which is their genus name. Spots on the leaves, fringed yellow-orange, possibly with white fungal growth beneath. Pretty much everything in my garden has holes eaten into the leaves. Light: They prefer brightly lit windowsills, but the fancy indoor plant should not be exposed to direct sunlight. It is essential to preventing primula disease problems to select a site with excellent drainage, since the primula roots can be damaged in winter when soil is w… The 42-year-old former glamour model has revealed that her eldest child lashes out and leaves holes in the wall if she denies him food. Polyanthus types (i.e. Phenologic plasticity is expected in Primula: it is common for leaves and scapes to elongate considerably; most species begin flowering when scapes are very short; pedicels also lengthen and stiffen at the end of anthesis. Phytoplasmal diseases; Aster yellows Aster yellows phytoplasma: References. Borne on stout stems above rosettes of spear-shaped, erect, light green leaves, these rocket-shaped spikes are quite long-lasting and provide a spectacular effect when planted in groups.