Herbs 
Herbs are valuable for their unusual medical uses and healing power.
To dream of herbs indicates the need to use a different approach in dealing with a situation. Changing your perspective is key, as well as opening up to new possibilities. This will allow you to get over things that have been bothering you.
Honey
Honey often indicates a sweet and pleasant nature. To dream of honey suggests honesty in communication. It also reflects your delight and joy.
Lilac
To dream of a lilac indicates heartache and rejection. Additionally, this dream reminds you to be wary of your environment. Things that you see and hear should not be taken at face value.
Yucca
To dream of the yucca tree indicates that you may be nervous about an impending situation and cautions against feeding this anxiety with foods high in acid like coffee, chocolate, or meat. Moderation is the key at this time.
To dream of yucca flowers may be a reminder from spirit to ensure your diet is replete in vitamins (especially thiamine or vitamin B1, riboflavin or vitamin B, calcium, and iron).
Many yucca trees in a dream signifies an ingenious money-saving idea.
Alder
Dreaming of an alder tree suggests a previously unknown health issue, as this tree has been used and known for centuries in the treatment of various ailments. Take this as a reminder to look after yourself and schedule a checkup if needed.
Alternatively, dreaming of an alder may symbolize fertility and stability.
Petals
To dream of petals represents a broken relationship or quarrel with a friend. It also symbolizes lament and remorse.
Plants
To dream of plants suggests productivity, spiritual nurture, improvement, or growth. A dream involving plants may be a trajectory of your thoughtful and affectionate nature.
In particular, indoor plants hint of life hurdles that may be inhibiting your growth potential. You are not poised to execute your daily undertakings with absolute independence.
Dreaming of plants may likewise suggest a fervent wish to be closer to nature.
If you are alienated from your children, then the plants can be seen as a symbol for your estranged children.
Pollen
To dream of pollen denotes irritability. Alternatively, it suggests propagation of new ideas.
Tulips
To dream of tulips denote a new beginning. You are at the time in your life where you feel great about yourself and thankful of how events have unfolded in your favor. Tulips are symbolic of love, hope, and faith. Consider 'two lips' - is your dream hinting that maybe you should kiss someone?
Wreath
To dream of a wreath is a representation of enrichment and opportunity.
Conversely, to dream of a withered wreath is a representation of wounded love and illness.