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The Angiosperms are the true flowering plants. The name means "covered seed" which means that the ovule (the egg cell) is covered by an organ called the ovary. As the egg develops to a seed, the ovary often develops as well--into the fruiting structure. The flowering plants are more recent evolutionarily than the gymnosperms and more diverse and variable.
 
 

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Aphids are tiny insects that feed on nutrients from plant stems, buds, and leaves. They come in many varieties, and are known to rapidly multiply and consume plants with weak immunite systems.

Aphids have a proboscis which contains four sharp stylets which is used to pierce plant tissue and suck out the nutritive juices. Horn-shaped tubes at the rear end of the aphid are called cornicles, and they secrete a waxy substance. Aphids also secrete a sweet substance called honeydew. Ants are naturally attracted to this honeydew and are often found around sites infested with aphids.

Aphids are eaten by ladybugs and other carnivorous insects. They are also naturally repelled by the following plants planted nearby: Catnip, Chives, Coriander, Dried & Crushed Chrysanthemum, Eucalyptus, Fennel, Feverfew (attracts aphids away from Roses), Garlic, Larkspur, Marigold, Mint, Mustard, Nasturtium, Onion, Oregano, Petunia, Sunflower.