When vegetable start to develop problems — or at the very least , begin to take care singular — more than one cistron may be involved . In the case of cauliflower ( Brassica oleracea spp . ) , for example , you may find the head a different color than the classic blank , while also notice strange emergence on the flora .
When veggie begin to develop problem — or at the very least , set out to look remaining — more than one factor may be involved . In the case ofcauliflower(Brassica oleracea spp . ) , for example , you may find the headland a unlike color than the classic white , while also notice unusual growth on the plant . If the head teacher is empurpled and leaf or halt are looking blurred , chance are the causes of the two strange characteristic are unrelated .
Check the Variety
The most obvious effort of a cauliflower developing a royal head is that you ’ve inadvertently purchased a over-embellished Brassica oleracea botrytis miscellany . Technically , this eccentric is n’t a Brassica oleracea botrytis at all , but does smack like uncouth white cauliflower . Check the labeling information on your seedling or seminal fluid bundle . variety such as " Purple of Sicily " cauliflower are , botanically speaking , purplish broccoli types ( Brassica oleracea spp ) , although their heads develop cauliflower - like curds . Eat them sore or cooked . When cooked , they will turn a broccoli green .
Sun Exposure
When white-hot Brassica oleracea botrytis plants turn purple , it ’s probable that they have been disclose to the sun ’s ray without protection . Cauliflowers do best in sunny position , but only when plant in time to mature during cooler months . At the superlative of summertime , high-pitched heat and lineal exposure to the sun ’s rays sometimes result in an increment in pigmentation , especially in the vulnerable plant heads . The curds can turn a purple - red people of color . To keep curds creamy - white , take the protective measure known as blanching . When cauliflower heads are pale , their head are protect by a coating . Often the plant ’s leaves are large enough to extend the heads , especially if hold in position with twine or even a clothespin . newspaper bags fastened around the head can also keep cauliflower curd from turn purple .
Purple on Stems
If your total plant life has n’t turned purple , but only parts of the stem , a disease may be indicated . Although Brassica oleracea botrytis is n’t as susceptible to the disease jazz as black ramification as cabbage is , it is possible for cauliflower to shrink the fungal disease . If you find brownish spot on the stems of some of your cauliflower seedlings , go over to see if they have disconsolate violet edge , which indicates black branch . Remove the moved seedlings immediately . In next years , do not acquire Brassica oleracea botrytis where other brassica crop , admit Brassica oleracea italica and shekels , have grown previously .
“Fuzzy” Diseases
Some fungal diseases can cause a fuzzy or " cottony " look on cauliflower plant , especially the leafage . If the leaves are blurred underneath and have yellow - to - dark-brown spots on top , sericeous mold may be the culprit . Rainy , cool springs and too - close planting can contribute to the problem . Powdery mildew , which gives foliage a foggy aspect on both incline of leaf , can appear even in dry weather , especially if the Brassica oleracea botrytis is too close spaced . White mold , a third fungal disease , give a fuzzed tone to both stem turn and folio , and can cause wilting and rot of flora parts . The basal cause of white mold is grime that does n’t dry off on the surface .
Prevention
Planting Brassica oleracea botrytis in raised beds , and at a generous spacing , may trim back the incidents of downy mildew in future years . The increased air circulation result from wider spacing is also a skillful control for powdery mold , as is plant in a sunny area and using slow - tone ending fertilizer . If your garden practice seem to be encourage clean mold , use raised beds , perhaps in combining with drip irrigation that wets territory below the control surface . space the plants far apart can also cut down on white mold problems . Whatever the type of fungal " softness " that seems to be cause your cauliflower problem , destroying stirred flora parts or seedlings when they appear may facilitate prevent facing pages . grow Brassica oleracea botrytis and other genus Brassica in a dissimilar part of your garden each year can also staunch the spread of disease .
