Petunia, Purple Wave™ Hybrid
Purple Wave petunia, the original groundcover petunia.
Ornamental Use null
Life Cycle null
Sow Method null
Bloom Duration null
Plant Shipping Information
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Petunias may be grown from seed sown early indoors and transplanted outside after frost, or from potted plants.
Sowing Seed Indoors:
- Sow petunia seeds indoors 8 weeks before last frost using a seed starting kit.
- Sow seeds thinly and barely press into seed starting formula. Do not cover with soil.
- Keep the soil moist at 70-75 degrees.
- Seedlings emerge in 10-14 days.
- As soon as seedlings emerge, provide plenty of light on a sunny windowsill or grow seedlings 3-4 inches beneath fluorescent plant lights turned on 16 hours per day, off for 8 hours at night. Raise the lights as the plants grow taller. Incandescent bulbs will not work for this process because they will get too hot. Most plants require a dark period to grow, do not leave lights on for 24 hours.
- Thin to one seedling per cell when they have two sets of leaves.
- Seedlings do not need much fertilizer, feed when they are 3-4 weeks old using a starter solution (half strength of a complete indoor houseplant food) according to manufacturer’s directions.
- Transplant hardened-off seedlings to the garden after the frost.
- Before planting in the garden, seedling plants need to be “hardened off”. Accustom young plants to outdoor conditions by moving them to a sheltered place outside for a week. Be sure to protect them from wind and hot sun at first. If frost threatens at night, cover or bring containers indoors, then take them out again in the morning. This hardening off process toughens the plant’s cell structure and reduces transplant shock and scalding.
Planting Potted Plants in the Garden:
- Select a location in full sun with good rich moist, well-drained organic soil.
- Prepare the bed by turning the soil under to a depth of 8 inches. Level with a rake to remove clumps of grass and stones.
- Most plants respond well to soils amended with organic matter. Compost is a wonderful form of organic matter with a good balance of nutrients and an ideal pH level, it can be added to your planting area at any time. If compost is not available, top dress the soil after planting with 1-2 inches of organic mulch, which will begin to breakdown into compost. After the growing season, a soil test will indicate what soil amendments are needed for the following season.
- Plants should stand 6 to 12 inches apart in the garden.
- Dig a hole for each plant large enough to amply accommodate the root ball.
- Place the top of the root ball even with the level of the surrounding soil. Fill with soil to the top of the root ball.
- Press soil down firmly with your hand leaving a slight depression around the plant to hold water.
- Water thoroughly, so that a puddle forms in the saucer you have created. This settles the plants in, drives out air pockets and results in good root-to-soil contact.
- Use the plant tag as a location marker.
- Keep weeds under control during the growing season. Weeds compete with plants for water, space and nutrients, so control them by either cultivating often or use a mulch to prevent their seeds from germinating.
- Mulches also help retain soil moisture and maintain even soil temperatures. For annuals an organic mulch of shredded leaves lends a natural look to the bed and will improve the soil as it breaks down in time. Always keep mulches off a plant’s stems to prevent possible rot.
- Keep plants well-watered during the growing season, especially during dry spells. Plants need about 1 inch of rain per week during the growing season. Use a rain gauge to check to see if you need to add water. It's best to water with a drip or trickle system that delivers water at low pressure at the soil level. If you water with overhead sprinklers, water early in the day so the foliage has time to dry off before evening, to minimize disease problems. Keep the soil moist but not saturated.
- Until plants become established, some protection from extreme winds and direct, hot sunlight may be necessary. Good air movement is also important.
- After new growth appears, a light fertilizer may be applied. Keep granular fertilizers away from the plant crown and foliage to avoid burn injury. Use low rates of a slow release fertilizer such as Flower-tone, as higher rates may encourage root rots.
- Remove spent flower spikes to encourage flowering and prevent seed development. Pinching the growing tips of plants can encourage bushiness.
- Monitor for pests and diseases. Check with your local Cooperative Extension Service for pest controls recommended for your area.
- Remove plants after they are killed by frost in fall to avoid disease issues the following year.
- Cut scraggly petunia plants back by half in late summer to spur growth and encourage new flowers to form.
- Petunias make beautiful edging plants and also can be combined with other summer-blooming annuals in mixed plantings. They are superb in containers of all sizes and types, either alone or combined with other flowers.
- Petunias attract hummingbirds and moths to the garden.
SunFull SunHeight4-6 inchesSpread4-5 feetOrnamental UseBeds, ContainerLife CycleAnnualSow MethodIndoor SowFloweringtrueBloom Duration12
Petunia, Purple Wave™ Hybrid is rated out of 5 by 16.Rated 5 out of 5 by Gleaner from Blossoming color waves What's not to adore about these bright, cheerful flowers? Started indoors, from seed, on March 1st. Now at July 3rd, they are tumbling over the rim, ready to bounce down the side. 2 packets of seeds provided enought for 4 railing boxes, 2 planters, and 2 large pots. Interplanted are some Lobelia, providing a brilliant contrast. These seeds had 100% germination and now bursting with bright, colorful blossoms. No dead-heading required. I anticipate by Labor day that these beauties will steal the show. Last summer, my railing boxes went on a "road show", decorating the garden of an outdoor wedding.Date published: 2015-07-03Rated 5 out of 5 by Sculli from Beautiful purple! Beautiful purple (left) and spreads rapidly and profuse bloomer, the petunia on the right is the Burpee Blink.Date published: 2015-04-06Rated 5 out of 5 by BonnieJ from Flowering from May through October! they haven't stopped flowering since May! GorgeousDate published: 2014-10-26Rated 5 out of 5 by WeezyG from So easy to start from seed! I started these from seed under grow lights and got 100% germination. Once they were a few weeks old I gave several plants to my in-laws and also my mom for them to baby until they were ready to go out. Neither of them have lights but they did just fine near windows for them. Both ended up with a nice big basket of flowers that they were able to enjoy all summer. I planted mine under a big oak tree and they did wonderfully in the shade too. I'll definitely do these again next year. I agree with another reviewer that they're really more of a vibrant magenta color than purple though.Date published: 2014-10-12Rated 5 out of 5 by PopPop from Incredible The most prolific flower I have ever grown. The vibrant color is incredible - a tad lighter than shown on-line. I grew from seed and planted them in 3, full sun beds. As advertised they spread 3 feet or more even climbing a bit up a tree. Blooms are intense – I marvel at the incredibly intense color even after 8 weeks now. I recommend feeding heavily with 2-3 times a week watering. They serve as mulch. I almost lost one to a bit of crab grass that my neighbor so graciously provided but it is coming back. These will be a mainstay in my flower beds for years to come.Date published: 2012-07-10Rated 5 out of 5 by Risa from Makes the most beautiful window boxes I ordered the Purple Wave Petunia plants last year and I admit I was a bit concerned initially when I got them as they seemed a little scraggly...a couple even had a few breaks. But I put all of them in my window boxes and they grew like nothing I have ever seen before. They absolutely exploded out of them in a cascade of color...and the color was striking! I have an older home (my first) that I am working on slowly, but the outside looks a bit worn and the window boxes just made the whole front come alive. Between these and the beds in the front I spent serious time setting up, I actually had a number of my older neighbors stop in their cars as they drove down the street and tell me how lovely everything looked and that I was doing a great job. I pretty much went with just the 1 type of flower in the window box. I like bright colors but my personal preference is not too have too much contrast together so I just let these shine. Anyone who has traveled to Europe in the spring, the boxes kind of reminded me of the uniform, cascading flowers you see draped off balconies in the historic areas. I plan to get them again this year.Date published: 2012-02-21Rated 5 out of 5 by greeenllama from Wonderful Petunia I have a balcony that only gets 4 hours of sun in the summer (and 7 in the early spring and late fall.) I planted 4 seeds and each one germinated and within 2-3 months (with much less that ideal sun) they were all blooming. My summer gardens are usually pathetic, but this petunia is blooming wonderfully. I planted these along with a few other flowers. These plants also tolerated the windy conditions that killed my Zinnias. At first I considered these seeds really expensive, but if each one will become such a strong plant I will be buying these year after year. Would recommended to even a beginning gardener. (I bought these because my grandmothers favorite plant is a purple petunia!) The picture is a closeup of two bloomsDate published: 2011-07-01Rated 5 out of 5 by Yearroundgardener from Tough and pretty I started by growing these under lights in the winter of 2009 - 2010. They grew quickly and flowered quickly. I transplanted them several times and ended up with 9" pots. I had to trim them raically several times to keep them down to a manageable size. These plants were on a mission to get big and produce lots of flowers. I ran out of room under the lights at one point through the winter so I put a couple plants in the garage. It was very cold and had very little light but they survived. I set the pots outside when the weather permitted and they were fine. I had equally good sucess growing them in the garden. They did the best in partial shade in our hot dry climate. I plan to try Lavender Wave this year.Date published: 2011-02-13