These are only derived from cuttings. Start in propagation with about two applications of 2,500 PPM B-Nine (or 10-20 PPM Sumagic) and apply the drench according to the plant format. This may have to do with the variety selection, but it can also be related to treatments during production. http://www.burpee.com/search/search.jsp?Ntt=Calibrachoa. Normally, you should take off 1/3 - 1/2 of the plant if you start to notice it getting leggy. Known for producing an abundance of colorful flowers from June until frost, calibrachoa does not require deadheading for continued bloom production. This will force them to bush out again, though you will lose blooming for a week or two. Move the million bells to a location with slightly cooler daytime temperatures. The ideal amount of light needed varies by variety but many like between 11 and 13 hours of light a day. This becomes much easier if you use a well draining, peat moss-based substrate. When I dug up the roots I found juicy little “bulbs”. Most newer genetics can handle a pH between 5.6 and 6.2. this is prevented so that people will purchase their cuttings from suppliers, instead of hurting business by growing their own. I am not aware of any “open” calibrachoa series or varieties on the market. Don’t harden off your liner too quickly or harshly. It has proven that using HID lights during propagation will result in early flowering. These plants require between 14 and 16 hours of sunlight to form flower buds. My calibrochia didn’t survive the winter. Check your root system and keep it healthy. Reduce watering if the tips of the leaves start to turn yellow. Additional spray applications or a second drench application can be applied if necessary. The pHshould be close to neutral or alittle bit acidic. If your calibrachoa won’t flower and you’re already sure theplants have adequate sunlight and nutrients, take a look at your soil. Apply the drench before you lower the temperature for your crop. I am not aware of any ”open” varities. This could mean daily during dry periods or for plants in containers, but will vary with local weather conditions. Laura Drotleff is editor of Greenhouse Grower. Thank you .Linda>. 4. 6. Baskets will get one more spray at the same stage (when side shoots are about 1 inch long) and the drench later on. These plants can be picky about the amount of daylight they receive and the temperature they like, but can easily be encouraged to bloom with some minor adjustments. I normally trim mine right before I leave for vacation. When watering, be sure to let the soil dry out in betweento avoid soggy soil. After transplanting the liners, keep the temperature up. - I have a compact plant with clustered, numerous small dark green leaves. Keep the temperatures up (especially at the beginning of the crop) and avoid late pinching. If you have struggled to growCalibrachoa in beds in the garden, try growing them in containers inst… How to Place Yard Lights for Victorian Landscaping, Fruits & Vegetables That Grow Well Indoors, Greenhouse Product News: Calibrachoa Photoperiod Requirements, Greenhouse Canada: Crazy About Calibrachoa, Mississippi State University: Calibrachoa Give Prolific Flowers All Season Long, Missouri Botanical Garden: Calibrachoa (Group), Dee's Nursery & Florist: Calibrachoa Million Bells, Waterloo Cedar Falls Courier: The Little Plant That Could: Calibrachoa Will Bloom its Fool Head Off. Keep the salt level below EC 2.0. The calibrachoa has need sun to bloom (at least 6 hours per day) but when there is propogation prohibited, that I aimed at other professionals who will be growing them to sell. See all author stories here. 5. Signs of too much water include uneven rooting, yellowing of the growing tips, uneven growth and hardened cuttings. 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